Bet you’re thinking about Apple’s (AAPL) iPhone.

I’m actually describing a Windows Mobile device. In fact, any touch-screen Windows Mobile device made in the past couple of years can perform the aforementioned functions — as long as it’s running a new application called Kinoma Play.

This much-needed shot in the arm for Windows Mobile comes from Kinoma Inc. and for $30 can be downloaded onto a computer or directly onto a device from www.kinoma.com. It works on touch and nontouch screens alike, though touch features do add a lot of pizzazz. After installation, Kinoma Play seems to totally take over the device’s multimedia functions, hiding every trace of Windows Mobile’s clunky, antiquated, menu-driven operating system.

Kinoma Play in action, clockwise from top left: a media interface, touch-screen navigation, upload to YouTube, picture rotation, search by characters, and photo zoom.

It smoothly opens and displays all types of media, including photos, videos and music. But it’s also a fast search engine for multimedia content on the phone, on the Web or even on your computer via remote search. Kinoma Play works with services including YouTube, Audible, Flickr, iDisk, Live365, Orb and SHOUTcast. And a section called the Kinoma Guide compiles over 100,000 podcast episodes, radio stations, videos, live television and Webcam clips, panoramas and photos into easy-to-browse categories.

After almost a week with this application, I changed the way I thought about on-the-go Web browsing for media. I forgot about typical browser functions like typing a Web site’s name into a URL bar and instead did plenty of things online with my portable device without deliberately thinking about being online.

Kinoma Play is so well-designed that I wish it could entirely replace the dated Windows Mobile user interface, which still lags behind the iPhone’s. But, alas, it’s about media only. It isn’t designed to supplant, and doesn’t change or improve, any of the phone’s more common functions, like overall email and Web browsing, calendar, contacts or productivity programs.

Kinoma is working on Symbian, Linux and even iPhone versions of its application and will release one of those versions by the end of this year.

I ran into a few problems while using Kinoma Play. On three different occasions using two different devices, my touch screen froze when I tried to start the application, and the only way I could fix the problem was by completely rebooting my device. Once in a while, I experienced slow performance, though this could have been attributed to my network connection. And Kinoma Play lacks a one-step shortcut to its home screen; currently, users must press a “Back” soft key on each screen until they reach the home screen.

But the pluses of Kinoma Play outweighed these hassles, especially considering how enjoyable this application was to use. I tested Kinoma on two Palm (PALM) devices running Windows Mobile: the not-yet-released Treo Pro, which will be available here in the fall for an unlocked, unsubsidized price of $549, and the $250 (after discounts and two-year-contract rebates) Treo 800w available from Sprint (S). Both have touch screens that work best with an included stylus, though a fingernail or fingertip worked for me in most cases.

Upon installation, Kinoma Play automatically scans a device’s media and organizes it into categories under a section called My Media Files. I was especially eager to see how photos were handled, so I started out in the Pictures category.

All Kinoma screens have a set of familiar navigational tools that appear as soft keys at the bottom of the screen; they show up when the bottom section of the screen is touched and disappear when touched again. On the bottom left, a “Back” arrow takes users to the previous screen. On the bottom right, a list-like icon represents what Kinoma calls the Menu Pod. When touched, this pulls up three succinct menus — for media, settings and another action related to the program that’s open.

I opened some photos that were stored on the Palm Treo Pro and touched the center of the screen with my finger. A quick tap on the screen zooms in on each photo, and a small inset of the photo with a box representing the magnified area appears on the lower right of the screen. I dragged this tiny box around in the inset image to change where I was zooming. To zoom in on a photo slowly, I simply touched and held my finger on the screen for a longer period of time. A quick tap after either zooming method will quickly snap the image back to normal view.

I moved from one photo to the next as I do on my iPod Touch: by placing a finger on one edge of the photo and flicking left or right across the screen. Rotating was fun and easy to do when I drew a circle on the photo with my fingertip in the direction that I wanted it to rotate. The image followed whatever motion I drew. To rotate the photo 180 degrees, I drew a larger half-circle.

I selected Flickr from Kinoma Play’s list of services and signed into my Flickr account in just a few steps. My photos and those of friends were just as easy to browse as my own photos, thanks to Kinoma Play’s built-in tools. The Menu Pod icon offered a one-step way to play all photos in slide shows; music could be selected to play in the background.

With a touch on the Menu Pod icon, users can add any media to favorites or to an “on-the-go” list. This same tool also sends multimedia to others via email; I used it to send friends photos of a recent trip to California as well as a YouTube link to video footage of Sen. Joe Biden speaking.

Kinoma makes something out of every action. The Menu Pod button seems to jump into the center of the screen when summoned, and each of its three menus spins like a tiny top to get out of the way so another menu can be seen. Other screens seemed to do a mini back flip as they opened or closed. And long lists seemed to bounce when scrolling reached the top or bottom.

In the Services menu, I used Audible to listen to part of an audio book and listened to rock and country songs on Web radio stations from SHOUTcast and Live365.

I particularly liked using the Kinoma Guide, which is constantly updated with material that streams to your devices when you open it. I found a Restaurant Guys podcast in which chef Cat Cora was interviewed, and even saved it for later listening by downloading this seven-megabyte podcast to my device in one clean step. Kinoma wisely adds all downloads to a special section that’s easy to find. The last 100 things you looked at on Kinoma Play can be found in a section called History.

These days in the tech world, much attention is being paid to applications sold on Apple’s App Store for use with the iPhone or iPod Touch. But Kinoma Play is one application that is desperately needed by Windows Mobile users, and it just might remind them that they can better navigate media-related Web services — without having to buy a new mobile device.

Edited by Walter S. Mossberg

• Email us at mossbergsolution@wsj.com. Find all our columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

The single best feature in Apple’s second-generation iPhone 3G isn’t the increased speed or the GPS location-finding feature. It is something called the “App Store,” a clever distribution mechanism for third-party programs that can run on the iPhone and on its close cousin, the iPod Touch. And you don’t even need a new iPhone to get the App Store. It is also part of a free software upgrade for older iPhones and a $10 upgrade for the Touch.

Scrabble is just one of the many ‘apps’ available for the iPhone and iPod Touch.

In just the first 10 days since the new iPhone and the App Store launched on July 11, more than 900 programs — applications, or “apps,” in tech jargon — have been introduced by numerous developers. Over 90% cost less than $10 or are free.

Even more noteworthy: iPhone and Touch users have downloaded 25 million copies of these programs, ranging from silly sound effects to challenging games; from news readers to restaurant locators; from social-networking programs to business applications.

We have been furiously downloading and trying out scores of these programs, using a new iPhone 3G, an original iPhone and an iPod Touch, and in general, we are very impressed. We found the process of choosing and downloading apps to be easy and quick, and most of the programs to be useful or entertaining. The vast majority are nicely designed, with great graphics and effective, simple user interfaces.

The easy availability of so many programs written by developers beyond Apple (AAPL) itself makes the iPhone a true computing platform, like a pocket-sized Windows or Macintosh PC. With so many programs already available, and many more in the pipeline, iPhone and Touch owners can have a device with fresh, different capabilities every day.

But the process isn’t perfect. For one thing, it is controlled by Apple, which can theoretically bar a program from distribution or take its time making one available.

There are also some glitches. If you download a lot of apps in a short period, it can slow the phone’s next synchronization with iTunes to a crawl, while iTunes tries to back up all the new programs, each of which can contain numerous hidden files. And there’s a bug in the new iPhone operating system that causes apps to crash, and can even force the iPhone or Touch to reboot, if you use a large number of the new apps in quick succession. Apple says it is working on fixing the latter problem.

Also, Apple’s claim of over 900 programs is somewhat misleading, because more than 100 of those are individual books you can read on the phone.

Apple’s baby isn’t the first smart phone that has attracted developers. Thousands of third-party programs already exist for Nokia (NOK) phones, BlackBerrys, and phones running the Palm (PALM) and Windows Mobile operating systems. But, compared with the graphically rich, snappy iPhone apps — many of which fetch data from the Internet at high speed — the typical program on these older platforms looks positively primitive.

AOL’s AIM program

The App Store can be accessed either from the device itself or from Apple’s iTunes software on a Windows or Mac computer, which then transfers the app to the iPhone or Touch. The programs cover a wide range.

Some fill in obvious holes in Apple’s original complement of iPhone software, things the iPhone has lacked that other phones have. These include AOL (TWX) Instant Messenger, a variety of task and to-do lists, sophisticated note takers and a voice dialer. There are numerous versions of popular board, card and word games, like solitaire, mahjong, Scrabble and Sudoku. There are also eye-popping iPhone versions of popular video games, some controlled by the phone’s motion detectors, which allow you to move cars and characters by just tilting the phone.

Numerous programs let you perform Internet functions without using the Web browser on the iPhone or iPod Touch. These include news readers, Internet radio players, sports-information apps, and programs that let you blog or use Google (GOOG) or Facebook or MySpace.

There are business programs from Oracle (ORCL), Salesforce.com and Bloomberg. And there’s a clutch of Bible programs.

Some are simply goofy, like a virtual Star Wars-like lightsaber, a rotary-phone dialer and a virtual “stapler.” And several programs turn the phone into a flashlight for emergencies.

There are way too many interesting apps to review here, but these are some we liked, in no particular order.

AOL Radio

AIM: free

This version of AOL’s popular instant-messaging program does a competent job with text chat, though it can’t yet do video or audio chats, or transfer files. Because Apple isn’t allowing third-party programs to run constantly in the background, you can’t receive new messages in AIM while doing other things. This will supposedly be fixed by new Apple technology due later this year.

AOL Radio: free

While the iPhone and Touch contain full, terrific iPod capabilities, they don’t come with Internet radio players like this one. It can stream music and talk from a wide variety of online sources, including the Internet versions of broadcast radio stations.

Evernote: free

This is an elegant note-taker that has been on computers for a while. You can jot down text notes, store photos or dictate audio memos. And it synchronizes with your Evernote account on Windows or Mac PCs or the Web.

Instapaper: free

A handy way to store Web pages on your iPhone or Touch for reading when you’re offline. While on your computer, an Instapaper button added to the Web browser can snag Web pages for your personal Instapaper database. Then, when your iPhone or iPod Touch is online, it synchronizes with the Web-based Instapaper database. Later, when you’re offline, the pages are still there on the device, ready to read.

Travelocity TravelTools: free

You can use this to check flight schedules, gate assignments and security waiting times. While you can’t book flights through this app, there’s a button that automatically calls Travelocity’s toll-free booking line.

More Cowbell!: free

This is inspired by the Christopher Walken/Will Ferrell Saturday Night Live skit, which made the lowly cowbell a cult musical instrument. Whenever you tap the on-screen cowbell, it makes the recognizable, hollow sound heard in songs like “Down on the Corner,” by Creedence Clearwater Revival. You can play along with any song you choose on the iPod Touch or iPhone.

Touch Tarot: $0.99

Touch Tarot

Touch Tarot is a digital tarot-card reading that takes place on your iPod Touch or iPhone, instead of at a table inside an incense-scented tent at the county fair. Phrasing above each card tells its general category, and below each card is a brief explanation of its meaning. For example, we turned over the Wheel of Fortune card in one card reading, and it said, “Advancement for good or ill. The unexpected may occur. Good fortune.”

iWant: free

The iWant app displays 12 black-and-white icons on your device’s screen, each representing a different category of something you might be looking for — including restaurants, bars, cafés, hotels, drugstores, banks, car rentals and movies, among others. The device identifies your location, and each category can be tweaked to search by distance or highest rankings from Yelp, a user-written rating service.

Urbanspoon: free

Urbanspoon resembles a slot machine: From left to right, columns show the location, cuisine and cost of nearby restaurants. Instead of pulling a lever to start the slot machine, you simply shake your iPhone or iPod Touch whenever you want to find a restaurant. When it stops, you see the name of a restaurant near you and its classification in each category. (You can also specify what location, cuisine or cost you’re looking for.)

Air Hockey: $0.99

Air hockey works like the game you used to play in your best friend’s basement. You play against the computer, using a fingertip to push red or blue mallets that move a puck around the screen-turned-table and trying to sneak the puck past your computer opponent to score a goal.

MotionX Poker: $4.99

MotionX Poker

This is an addictive poker game, played with realistic, beautifully rendered dice instead of cards. The cool thing is that you roll the dice by simply shaking the iPhone or iPod Touch; convincing sound effects accompany each roll of the dice.

MLB.com At Bat: $4.99

There are lots of cellphone apps and services that can give you live updates on baseball games. What’s special about this one is that it adds video clips of key plays that you can view while the games are still in progress, using the full power of the gorgeous screen and video player on the iPhone and the Touch.

Crash Bandicoot Nitro Kart 3D: $9.99

This is a rollicking, fun iPhone and iPod Touch rendition of the classic video racing game, where you control your car by tilting the phone. The graphics are good, and the game-play is responsive.

Truphone: free

This is the first app for the iPhone that allows you to make cheap phone calls over the Internet instead of using the built-in cellphone capability, which can be much costlier, especially for international calls. In our tests, we had some trouble at first, but after we removed and re-installed the program, it worked fine. Calls to 40 countries are six cents a minute to landlines and 30 cents a minute to cellphones. The iPod Touch lacks a microphone, so this app works only on the iPhone.

Write to Walt and Katie at mossbergsolution@wsj.com

The Palm Centro

The two companies most often associated with corporate-issued devices, Research In Motion Ltd. and Palm Inc. are anxious to convert people like my friends. This week I tested Palm’s new attempt: the Centro (www.palm.com/centro). It looks like a hip, miniature version of the more expensive Palm Treo, with most of the same functions and only costs $99 after rebates and a two-year contract. The Centro comes in onyx and ruby, though the latter won’t be sold until next month.

Overall, I liked the Centro. It has plenty of pluses, including a touch screen, easy email set-up for personal accounts like Gmail and Hotmail, built-in instant messaging for three programs, a camera for still shots or video and expandable memory. It’s available now and runs on Sprint’s fast 3G network, costing at least $15 monthly for data on top of your voice plan. Like the Treo, it has a tiny stylus for detailed screen selecting and an on/off ringer switch.

RIM should be credited with introducing one of the first hip, mini smart phones to the demographic of 25-to-30-year-olds without smart phones. About a year ago, it brought out the $200 BlackBerry Pearl 8100, which is narrower than traditional BlackBerrys and is easy to mistake for a stylish cellphone. It uses a condensed keyboard with two letters per key that works using auto-correcting SureType technology, and has a glowing trackball for navigation.

For Palm’s Centro to compete with the Pearl, it, too, needed to be thinner left to right. But instead of doubling up letters per key and using SureType like the Pearl, the Centro has a shrunken version of Palm’s full keyboard; letter keys are squeezed so close together that large-fingered users will likely have trouble. I found the Pearl’s keyboard easier to use because its keys are flatter and larger compared with the Centro keys, which caused me to mistype messages. But the Centro’s tiny keyboard could be a real step up for people who still use their cellphone’s numbered keypad to type text messages.

The Centro’s touch screen saves time and makes navigation easier. The BlackBerry Pearl doesn’t have a touch screen, forcing users to do a lot of scrolling with the navigational trackball.

A success with the Centro would be much needed good news for Palm, which hasn’t had an easy go of it lately. While RIM has been cranking out more stylish BlackBerrys, Palm’s solid Treo hasn’t changed all that drastically in the past couple of years. Even loyal Treo users are starting to complain about Palm’s old operating system crashing. Of course, the popularity of Apple Inc.’s iPhone only rubs salt in the wounds of this once unstoppable company.

RIM will bring out a new Pearl, the 8130, next month to step up its game. This Pearl will be the same physically, but will have some internal changes, including the ability to work on the CDMA network, built-in GPS and upgraded software.

I tested a stylish ruby Centro and also got my hands on an early version of the BlackBerry Pearl 8130 from Verizon Wireless. Lined up side by side, the Palm Centro looks like a chubby version of the Pearl. The Pearl looks and feels sleeker and sharper than the Centro, due in part to the Centro’s rounded edges and tiny, bubble-shaped keys.

The Pearl is just a hair smaller in all directions — width, height and depth. The Centro is almost a full ounce heavier than the Pearl, but each weighs only 4.2 and 3.4 ounces, respectively. The Centro’s 320×320 resolution screen looks brighter than the Pearl’s 240×260 screen.

I focused on the Centro, setting up two personal email accounts on it in just a few minutes. I started out typing very slowly on the keyboard, which has keys made of a slightly sticky material. The more familiar I became with it, the faster I could go, but I’m still not completely comfortable using the keyboard.

I quickly navigated through the Centro’s menus using Palm’s familiar operating system. The touch screen saved me from arrowing around to select an icon or menu; I just tapped the screen using my finger or the stylus. First-time smart-phone users will appreciate this aspect.

I made calls on the Centro, pressing the phone shortcut key to get started. The keyboard’s number keys work just as they do on a Treo, but I preferred using the larger virtual buttons on the touch screen. The Centro felt like a normal cellphone in my hand and against my ear, especially compared with the clunky, rectangular Treos and BlackBerrys. The tiny Centro fit into the smallest purse I own.

An icon on the home screen marked “IM” linked me directly into a screen where I could log in to and use three instant-messaging programs simultaneously: AOL’s AIM, Yahoo Messenger and Windows Live Messenger. I jumped between IM sessions using the left and right navigation key buttons. But a faster way to do this was just by touching the screen to select a program. I also tapped the screen to select names of friends before IMing them. Again, the touch screen saved time and took out the guesswork of which key to press to navigate.

I played preloaded music on the Centro and BlackBerry Pearl; both have built-in speakers that sound remarkably good for such little devices.

Battery life on the Centro is estimated at 3.5 hours of talk time and up to 12.5 days of standby time. The Pearl 8130’s talk time is expected to fetch 3.8 hours before quitting, but its standby battery is expected to last only nine days. I didn’t perform rigorous battery tests, but found that my BlackBerry Pearl needed to be charged before my Palm Centro after a weekend of using them for roughly the same amount of time.

The BlackBerry Pearl 8130 comes with only RIM’s BlackBerry Messenger program. Both the Pearl and Centro have 64 megabytes of internal memory and the ability to expand that using microSD cards.

If you’re considering the leap from a cellphone to a smart phone but don’t want the bigger, geekier look of one of these helpful devices, the Palm Centro is a good option. Its keyboard will take some getting used to, but its touch screen will win you over by providing a simpler way to navigate — especially for smart-phone novices.

-Edited By Walter S. Mossberg

• Email mossbergsolution@wsj.com

One of the most important trends in personal technology over the past few years has been the evolution of the humble cellphone into a true handheld computer, a device able to replicate many of the key functions of a laptop. But most of these “smart phones” have had lousy software, confusing user interfaces and clumsy music, video and photo playback. And their designers have struggled to balance screen size, keyboard usability and battery life.

Now, Apple Inc., whose digital products are hailed for their design and innovation, is jumping into this smart-phone market with the iPhone, which goes on sale in a few days after months of the most frenzied hype and speculation we have ever seen for a single technology product. Even though the phone’s minimum price is a hefty $499, people are already lining up outside Apple stores to be among the first to snag one when they go on sale Friday evening.

We have been testing the iPhone for two weeks, in multiple usage scenarios, in cities across the country. Our verdict is that, despite some flaws and feature omissions, the iPhone is, on balance, a beautiful and breakthrough handheld computer. Its software, especially, sets a new bar for the smart-phone industry, and its clever finger-touch interface, which dispenses with a stylus and most buttons, works well, though it sometimes adds steps to common functions.

The Apple phone combines intelligent voice calling, and a full-blown iPod, with a beautiful new interface for music and video playback. It offers the best Web browser we have seen on a smart phone, and robust email software. And it synchronizes easily and well with both Windows and Macintosh computers using Apple’s iTunes software.

It has the largest and highest-resolution screen of any smart phone we’ve seen, and the most internal memory by far. Yet it is one of the thinnest smart phones available and offers impressive battery life, better than its key competitors claim.

The phone is thinner than many smart phones.

It feels solid and comfortable in the hand and the way it displays photos, videos and Web pages on its gorgeous screen makes other smart phones look primitive.

The iPhone’s most controversial feature, the omission of a physical keyboard in favor of a virtual keyboard on the screen, turned out in our tests to be a nonissue, despite our deep initial skepticism. After five days of use, Walt — who did most of the testing for this review — was able to type on it as quickly and accurately as he could on the Palm Treo he has used for years. This was partly because of smart software that corrects typing errors on the fly.

But the iPhone has a major drawback: the cellphone network it uses. It only works with AT&T (formerly Cingular), won’t come in models that use Verizon or Sprint and can’t use the digital cards (called SIM cards) that would allow it to run on T-Mobile’s network. So, the phone can be a poor choice unless you are in areas where AT&T’s coverage is good. It does work overseas, but only via an AT&T roaming plan.

In addition, even when you have great AT&T coverage, the iPhone can’t run on AT&T’s fastest cellular data network. Instead, it uses a pokey network called EDGE, which is far slower than the fastest networks from Verizon or Sprint that power many other smart phones. And the initial iPhone model cannot be upgraded to use the faster networks.

The iPhone compensates by being one of the few smart phones that can also use Wi-Fi wireless networks. When you have access to Wi-Fi, the iPhone flies on the Web. Not only that, but the iPhone automatically switches from EDGE to known Wi-Fi networks when it finds them, and pops up a list of new Wi-Fi networks it encounters as you move. Walt was able to log onto paid Wi-Fi networks at Starbucks and airports, and even used a free Wi-Fi network at Fenway Park in Boston to email pictures taken during a Red Sox game.

But this Wi-Fi capability doesn’t fully make up for the lack of a fast cellular data capability, because it is impractical to keep joining and dropping short-range Wi-Fi networks while taking a long walk, or riding in a cab through a city.

AT&T is offering special monthly calling plans for the iPhone, all of which include unlimited Internet and email usage. They range from $60 to $220, depending on the number of voice minutes included. In an unusual twist, iPhone buyers won’t choose their plans and activate their phones in the store. Instead, they will do so when they first connect the iPhone to the iTunes software.

Despite its simple interface, with just four rows of colorful icons on a black background, the iPhone has too many features and functions to detail completely in this space. But here’s a rundown of the key features, with pros and cons based on our testing.

Hardware: The iPhone is simply beautiful. It is thinner than the skinny Samsung BlackJack, yet almost its entire surface is covered by a huge, vivid 3.5-inch display. There’s no physical keyboard, just a single button that takes you to the home screen. The phone is about as long as the Treo 700, the BlackBerry 8800 or the BlackJack, but it’s slightly wider than the BlackJack or Treo, and heavier than the BlackBerry and BlackJack.

The display is made of a sturdy glass, not plastic, and while it did pick up smudges, it didn’t acquire a single scratch, even though it was tossed into Walt’s pocket or briefcase, or Katie’s purse, without any protective case or holster. No scratches appeared on the rest of the body either.

There are only three buttons along the edges. On the top, there’s one that puts the phone to sleep and wakes it up. And, on the left edge, there’s a volume control and a mute switch.

One downside: Some accessories for iPods may not work properly on the iPhone. The headphone jack, which supports both stereo music and phone calls, is deeply recessed, so you may need an adapter for existing headphones. And, while the iPhone uses the standard iPod port on the bottom edge, it doesn’t recognize all car adapters for playing music, only for charging. Apple is considering a software update to fix this.

Touch-screen interface: To go through long lists of emails, contacts, or songs, you just “flick” with your finger. To select items, you tap. To enlarge photos, you “pinch” them by placing two fingers on their corners and dragging them in or out. To zoom in on portions of Web pages, you double-tap with your fingers. You cannot use a stylus for any of this. In the Web browser and photo program, if you turn the phone from a vertical to a horizontal position, the image on the screen turns as well and resizes itself to fit.

In general, we found this interface, called “multi-touch,” to be effective, practical and fun. But there’s no overall search on the iPhone (except Web searching), and no quick way to move to the top or bottom of pages (except in the Web browser). The only aid is an alphabetical scale on the right in tiny type.

There’s also no way to cut, copy, or paste text.

And the lack of dedicated hardware buttons for functions like phone, email and contacts means extra taps are needed to start using features. Also, if you are playing music while doing something else, the lack of hardware playback buttons forces you to return to the iPod program to stop the music or change a song.

Keyboard: The virtual keys are large and get larger as you touch them. Software tries to guess what you’re typing, and fix errors. Overall, it works. But the error-correction system didn’t seem as clever as the one on the BlackBerry, and you have to switch to a different keyboard view to insert a period or comma, which is annoying.

Web browsing: The iPhone is the first smart phone we’ve tested with a real, computer-grade Web browser, a version of Apple’s Safari. It displays entire Web pages, in their real layouts, and allows you to zoom in quickly by either tapping or pinching with your finger. Multiple pages can be open at the same time, and you can conduct Google or Yahoo searches from a built-in search box.

Email: The iPhone can connect with most popular consumer email services, including Yahoo, Gmail, AOL, EarthLink and others. It can also handle corporate email using Microsoft’s Exchange system, if your IT department cooperates by enabling a setting on the server.

BlackBerry email services can’t be used on an iPhone, but Yahoo Mail supplies free BlackBerry-style “push” email to iPhone users. In our test, this worked fine.

Unlike most phone email software, the iPhone’s shows a preview of each message, so you don’t have to open it. And, if there is a photo attached, it shows the photo automatically, without requiring you to click on a link to see it. It can also receive and open Microsoft Word and Excel documents and Adobe PDF files. But it doesn’t allow you to edit or save these files.

Memory: The $499 base model comes with four gigabytes of memory, and the $599 model has eight gigabytes. That’s far more than on any other smart phone, but much less than on full-size iPods. Also, there’s no slot for memory-expansion cards. Our test $599 model held 1,325 songs; a dozen videos (including a full-length movie); over 100 photos; and over 100 emails, including some attachments, and still had room left over.

Battery life: Like the iPod, but unlike most cellphones, the iPhone lacks a removable battery. So you can’t carry a spare. But its battery life is excellent. In our tests, it got seven hours and 18 minutes of continuous talk time, while the Wi-Fi was on and email was constantly being fetched in the background. That’s close to Apple’s claim of a maximum of eight hours, and far exceeds the talk time claims of other smart phones, which usually top out at five and a half hours.

The interface features \”cover flow\” technology for flipping through album covers.

For continuous music playback, again with Wi-Fi on and email being fetched, we got over 22 hours, shy of Apple’s claim of up to 24 hours, but still huge. For video playback, under the same conditions, we got just under Apple’s claim of seven hours, enough to watch four average-length movies. And, for Web browsing and other Internet functions, including sending and receiving emails, viewing Google maps and YouTube videos, we got over nine hours, well above Apple’s claim of up to six hours.

In real life, of course, you will do a mix of these things, so the best gauge might be that, in our two-week test, the iPhone generally lasted all day with a typical mix of tasks.

Phone calls: The phone interface is clean and simple, but takes more taps to reach than on many other smart phones, because there are no dedicated hardware phone buttons. You also cannot just start typing a name or number, but must scroll through a list of favorites, through your recent call list, or your entire contact list. You can also use a virtual keypad.

One great phone feature is called “visual voice mail.” It shows you the names or at least the phone numbers of people who have left you voicemail, so you can quickly listen to those you want. It’s also very easy to turn the speakerphone on and off, or to establish conference calls.

Voice call quality was good, but not great. In some places, especially in weak coverage areas, there was some muffling or garbling. But most calls were perfectly audible. The iPhone can use Bluetooth wireless headsets and it comes with wired iPod-style earbuds that include a microphone.

Google maps on the iPhone.

A downside — there’s no easy way to transfer phone numbers, via AT&T, directly from an existing phone. The iPhone is meant to sync with an address book (and calendar) on a PC.

Contacts and calendars: These are pretty straightforward and work well. The calendar lacks a week view, though a list view helps fill that gap. Contacts can be gathered into groups, but the groups can’t be used as email distribution lists.

Syncing: The iPhone syncs with both Macs and Windows PCs using iTunes, which handles not only the transfer of music and video, but also photos, contacts, calendar items and browser bookmarks. In our tests, this worked well, even on a Windows Vista machine using the latest version of Outlook as the source for contacts and appointments.

iPod: The built-in iPod handles music and video perfectly, and has all the features of a regular iPod. But the interface is entirely new. The famed scroll wheel is gone, and instead finger taps and flicking move you through your collection and virtual controls appear on the screen. There’s also a version of the “cover flow” interface which allows you to select music by flipping through album covers.

Other features: There are widgets, or small programs, for accessing weather, stock prices and Google Maps, which includes route directions, but no real-time navigation. Another widget allows you to stream videos from YouTube, and yet another serves as a notepad. There’s a photo program that displays individual pictures or slideshows.

The only add-on software Apple is allowing will be Web-based programs that must be accessed through the on-board Web browser. The company says these can be made to look just like built-in programs, but the few we tried weren’t impressive.

Missing features: The iPhone is missing some features common on some competitors. There’s no instant messaging, only standard text messaging. While its two-megapixel camera took excellent pictures in our tests, it can’t record video. Its otherwise excellent Web browser can’t fully utilize some Web sites, because it doesn’t yet support Adobe’s Flash technology. Although the phone contains a complete iPod, you can’t use your songs as ringtones. There aren’t any games, nor is there any way to directly access Apple’s iTunes Music Store.

Apple says it plans to add features to the phone over time, via free downloads, and hints that some of these holes may be filled.

Expectations for the iPhone have been so high that it can’t possibly meet them all. It isn’t for the average person who just wants a cheap, small phone for calling and texting. But, despite its network limitations, the iPhone is a whole new experience and a pleasure to use.

• Email us at mossbergsolution@wsj.com. Find all our columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

But voice mail lags behind in key ways. A voice mail still doesn’t tell you the caller’s name or reason for calling unless you listen to at least part of it. You usually can’t reply to a voice mail with a message of your own, as with email; instead, you must call the person back. And you can’t easily jump from the most recent voice mail to the 10th without listening to every message in between.

Pinger, a free voice mail messaging service, works on mobile devices, email and its Web site, www.pinger.com.

Still, voice mail has its place. A phone call is much more personal than an email, and lets you use vocal inflection to express your point, whereas email expressions can sometimes be misinterpreted. And it’s often easier and faster to speak your message than to type it out.

This week, I tested Pinger, a free messaging service that tries to make voice mail more usable by emphasizing its strengths and making it a little more like email, or like a cellphone text message. This new service comes from Pinger Inc, a Silicon Valley-based company started by former Palm Inc. employees.

Pinger works by sending messages using a quick back-and-forth voice-mail system. You dial a special number, say the recipient’s name, leave a message and hang up. The recipient is notified of this message and its sender via Short Message Service (SMS), and/or email and then must dial in or go to a Web page to hear the voice mail. He or she can reply to the voice mail by pressing “1,” leaving a message for the sender and hanging up.

You can also log into your Pinger account via the www.pinger.com Web site. Here, your Pinger voice mails are listed like emails, including the sender’s name, time sent, length and notes that you can add about each message. A green arrow beside messages indicates that you replied, and messages can be sorted by category.

Pinger is one of several new services that are trying to bring voice into the Internet age. One, called Jott, at jott.com, lets you dial a number and dictate messages to yourself, like notes or reminders, or messages that can be broadcast to others. It even tries to transcribe what you say. Another, called Evoca, at evoca.com, records and stores dictation for archiving, sharing and podcasting. It offers both transcription and translation.

Overall, Pinger’s messaging service was most convenient when I was the sender rather than the receiver. When I didn’t have time to type a message on my BlackBerry or didn’t want to bother with writing a text message on my phone’s numeric keypad, Pinger proved to be a fast, hassle-free process that took only a few tries to get down pat. And it was helpful in situations when I wanted to leave a message rather than talk to another person.

But the process of receiving a Pinger message on a mobile device isn’t as straightforward as it should be. In the time needed to receive and read the Pinger text message notification about a voice mail, some users could have already received and read a text message or BlackBerry email.

I got started with Pinger by setting up an account with my first and last name, email address and a four-digit PIN. I entered my cellphone number, as well as the make and model of my cellphone.

Then, I went to the Web site Pinger.com to set up a list of contacts by entering names and email addresses of friends. I manually entered a few contacts, and then followed steps to import a more complete list of my contacts from Microsoft’s Outlook Express. Contacts can also be imported from Gmail, Yahoo, AOL, Entourage and Outlook.

You can send and receive messages directly on the Pinger site, without a phone, but you need a computer with a microphone to record messages.

But Pinger is at its best when used as an on-the-go solution with your cellphone or mobile device; I quickly left messages for friends in just a few steps. After calling a special number, a recorded voice asked, “Who do you wanna message?” I spoke the name of one of my contacts, the system repeated it back to me and a tone sounded after which I left my voice mail. Hanging up automatically sends the message.

To respond to a Pinger message on your cellphone, you press your phone’s “1″ button after listening to the original message and speak after the tone. Just like with email, you can forward a voice mail or reply to all recipients of the message.

But until I became familiar with Pinger, I wasn’t sure which numeric commands did what. Pinger gives as few vocal prompts as possible to simplify things. For example, if five messages are sent back and forth between two people, the entire thread of messages will play back on the voice mail before any vocal prompts are heard. This can be a little confusing, unless you remember that the “0″ key always opens a help menu.

Pinger may have trouble finding an audience. The idea of using voice mail might be considered too old-fashioned for younger users, while the thought of receiving a text message to get a voice mail might be too complicated for older users. And, though Pinger is currently free, it may charge in the future.

For people who are already familiar with mobile messaging, the extra step of calling in or logging on to a Web site to get a message may seem redundant. Pinger hopes its service will appeal to those who don’t currently use text messaging or email on a mobile device, but still want a fast way to send messages.

If you prefer the personal touch of voice mail over email and text messaging, or you don’t always have time to call someone else for fear of starting an entire conversation, Pinger works well. It takes a little practice to get comfortable with how you’ll use it in your everyday life, but it offers a new way to look at messaging.

Email address: MossbergSolution@wsj.com

Google has been branching out from its search-engine roots to offer a variety of Web-based applications. Some of these, especially Gmail and Google Maps, have been well received and are quite popular on computers. Now the company wants us to use these and other applications away from the computer, too — on mobile devices.

This week, we put Google’s suite of mobile programs through the ringer to see if we might let it infiltrate our on-the-go lifestyle as easily as we’ve let Google search become an everyday part of our computer’s browser. Google offers five Web applications for downloading onto your mobile device including Maps, Gmail, SMS, Search and News.

We focused on the first three programs to see how they would fare on a tiny device with a smaller screen that demands more scrolling to view information that is normally contained in a single screen on a computer.

Overall, we were pleasantly surprised by Google Maps for mobile, Gmail for mobile, and Google SMS (Short Messaging Service), a system that uses text messaging to find answers about certain topics. The programs are visually attractive on smaller screens, and didn’t require much practice, catering to people who want quick assistance without much fuss.

And Gmail for mobile lets you open attachments containing photos, Microsoft Word documents and PDFs — a capability typically only found on Treos, BlackBerrys and Windows Mobile smart phones, not cellphones.

Google Inc. isn’t alone in this field. Many companies, including its rival, Yahoo Inc., make mobile applications for cellphones, and this category is likely to keep growing.

We used three mobile devices for our Google tests: the $80 Samsung A900M cellphone from Sprint, the $225 Samsung Drift cellphone, from a new phone carrier called Helio and the $400 Palm Treo 700p with Verizon service (all prices include two-year contracts). Your cellphone carrier must use Java programming language to work with Maps and Gmail for mobile; Verizon does not. The Treo works with Google Maps for mobile but not with this new Gmail version. Any phone with text messaging capability can use Google SMS.

These Google mobile applications are free to download, but your cellphone carrier may charge you for Web browsing or text messaging, depending on your plan.

To download any of these applications, you can go to www.google.com/mobile and enter your cellphone number, triggering the site to send a text message to your device with a URL link for the program you want to download. Or you can enter the URL (found on the Web site) into your cellphone’s browser. We tried both methods with success, downloading Google Maps for mobile in 10 seconds during one test.

Our Sprint Samsung A900M came preloaded with Gmail for mobile, so we quickly entered our Gmail username and password to get started. In seconds, our screen was filled with up to six emails at a time, each clearly divided by lines. Each email’s subject, sender and date were visible on our tiny screen, written in a legible font that didn’t seem squeezed. New emails were listed in bold type.

We used the phone’s directional buttons to scroll up or down, highlighting and selecting emails to read them. Each email read much like on a computer screen, but (thankfully) without the advertisements that Gmail usually lists along the right side of a computer screen.

Email attachments were easy to open and read; we opened a Microsoft Word document and a digital photo in JPG format, the photo was shrunk to fit onto our phone’s screen so we didn’t have to scroll. Attachments can’t be edited.

You can perform every action in Gmail for mobile that you can in regular Gmail, including replying to and starring emails, searching through messages, reporting spam and archiving. We searched through emails for the word “Walt” and quickly got a list of relevant emails, and an email that we sent from the phone was received on the other end in seconds. Tasks performed in Gmail for mobile automatically synched with our Gmail account.

Google Maps for mobile was familiar and simple. After downloading it and opening it on our cellphone, we entered our ZIP Code and a map of Washington, D.C., appeared on the entire screen. A list with Find Business, Find Location and Directions options helped us narrow our search.

The select button on each of our devices zoomed in on the map, and scrolling around with directional buttons moved the map accordingly. We quickly switched between map view and satellite view, the latter showing us detailed aerial shots of our tree-filled neighborhoods. A Show Traffic option color-codes highways in 30 major cities to show how fast the cars in that area are moving.

We searched for our local Four Seasons hotel by typing “Four Seasons” into the Find Business section of Google Maps for mobile. Nine results were returned, the second was the hotel. The hotel’s address, phone number, parking fees, room rates and acceptable credit cards were also listed.

The Helio Samsung Drift cellphone comes preloaded with Google’s Maps for mobile, and also has built-in GPS capability. This feature lets you press “0″ when using Google’s mapping program on your phone; a tiny circle marks where you are on the map.

The Google SMS mobile tool is fun to use, and doesn’t require a download. We just sent questions via text message to GOOGL, or 46645 on the numeric keypad. Various data can be retrieved including local listings, weather, sports scores, trivia, movie times and translations.

We asked for George Bush’s age and got the 41st president’s birthday sent back in a text message a second after our question was sent (June 12, 1924, if you’re curious). While on the way to an Irish pub for dinner, we typed in the slightly odd name of the place and its ZIP Code (RiRa 22201) and got a local listing response, including the address and phone number for the two RiRa Irish Pubs in the area.

Sometimes we had to rephrase our inquiry to receive a helpful Google response, and if you don’t have text messaging included in your phone’s plan, this could get costly. But as we used Google SMS more, we got better at asking questions the right way.

If you use a computer every day, chances are good that you’re spoiled by being able to retrieve helpful data within seconds, thanks to the Internet. Google’s mobile applications give you that convenience on the go, in a way that doesn’t leave you missing your computer.

Email: MossbergSolution@wsj.com

When it comes to cool hand-held devices, one always stands out in the crowd: the T-Mobile Sidekick. You may have seen photos of Hollywood stars posing with this device like an accessory, or maybe you’ve just seen someone using one and you caught yourself wondering what it was.

The Sidekick, built for T-Mobile by Sharp Electronics Corp., doesn’t look like most common hand-helds, such as the Palm Treo or RIM BlackBerry, which are designed with a screen and keyboard lined up under one another for convenient emailing, phone use and Web browsing. Instead, the Sidekick is meant to be held horizontally and its screen must be twisted out with a dramatic, eye-catching snap in order to use its hidden keyboard underneath. In closed-keyboard position, the device can be held up to your ear vertically to use as a phone.

This week, we tested the latest version of this trendy hand-held, the Sidekick 3. It will officially launch July 10 for $300 with a two-year contract from T-Mobile USA Inc., but is available just for current T-Mobile customers starting today for 12 days.

Testing the Glam Factor

The last edition of the Sidekick — Sidekick 2 — came out almost two years ago, and plenty of improvements have been made in this product category since then, so we were expecting exciting new things from this third edition. We had fun testing the glam factor of the Sidekick 3 this week, using it in clubs, bars and taxicabs with extra screen-twisting snaps just for effect. But while our new gadget earned plenty of approving glances from those in the know, the Sidekick 3 isn’t all it could be.

The Sidekick 3’s most distinctive feature is its flip-out screen, but you can’t dial phone numbers with the screen closed.

Its new design is slightly more tapered than the chunky Sidekick 2, but that’s not saying much. Compared with the 0.45-inch thickness of the recently introduced Motorola Q, the Sidekick 3’s 0.86-inch depth isn’t anything remarkable. The more physically comparable Palm Treo 700p is 0.9 inches deep, but the Sidekick 3’s overall length outstretches the Treo by almost an inch, making it appear larger overall.

The Sidekick 3’s screen is generously sized at 2.62 inches diagonal, due in part to its horizontal layout. But the screen’s resolution is the same as it was on the Sidekick 2: a mushy 240×160 pixels. Compared with screens on other devices that offer greater sharpness and brighter colors, the Sidekick 3’s screen is a definite downer.

While many of the latest smartphones use high-speed EV-DO data networks for zippy Web browsing, the Sidekick 3 only uses EDGE — a much slower technology. When we tried to pull up articles about the World Cup, it took us at least 30 or 40 seconds to load each Web site.

New Trackball

Four navigation buttons that dot each of the screen’s corners make it easy to get around to different areas on this device. We especially liked the Sidekick 3’s trackball, which replaced the Sidekick 2’s up/down wheel so as to enable scrolling in all four directions.

But we were disappointed and a little surprised that the Sidekick’s lousy phone function hasn’t been improved with this version. Because of this device’s flip-out screen, the keyboard and numeric keypad are hidden unless the screen is out. So you can’t dial a number with the screen closed. After opening the screen and dialing, you can flip the screen in again and hold the phone up to your ear, but this back-and-forth process is tiring.

You can call people in your Contacts list with the screen closed by selecting an icon on the screen, because you don’t need access to the keypad for that. But even this process is a bit clumsy compared with the speed-dial functions on standard cellphones.

A few more bells and whistles try to spice up the Sidekick 3. These include Bluetooth, a processor four times as fast as that of the Sidekick 2, and a 1.3-megapixel camera. We found the camera easy to use, and a special button positioned on the top right edge of our Sidekick 3 worked as an easy shortcut to use the camera on quick notice.

We easily emailed photos directly from our photo gallery, using the trackball and navigational buttons to pull up an email format before swinging the screen out to type an email address using the keyboard.

Instant messaging on the Sidekick 3 is well-done, as it was on the Sidekick 2. AOL Instant Messenger, MSN Messenger and Yahoo Messenger come with the device, and we chatted with friends on AIM with ease. The keyboard, though it’s hard to get to, is generously spread out and comfortable to use after typing messages for awhile.

The Sidekick 3 also has a built-in Mini-SD memory-card slot, but we had to call tech support to learn where it was located. This card slot is inconveniently located behind the back panel of the device, meaning you have to actually remove this panel — exposing the battery — in order to use the slot. For users who want to pop their memory cards in and out, this is a real hassle.

Cutesy Extras

If you’re desperate for cutesy extras, the Sidekick 3 is loaded with them. The trackball turns different colors to indicate waiting text messages, instant messages, email or voice mail, and a multitude of sounds chime from the device just for the fun of it. Seventeen cartoon icons come loaded onto the device for pairing up with the contacts in your address book if you don’t want to use an actual photo. Even the low-battery indicator on the Sidekick chimes in a way that sounds cute.

But at the end of the day, this device is still not up to par with its competitors. In social circles where it’s considered cool, it might be worth buying. And if you have a separate phone, you can use the Sidekick 3 as a data-only device, though that means paying for, and juggling, two gadgets.

But the Sidekick 3’s poor phone, low-resolution screen and covered keyboard design left us unimpressed, even if it might be trendy. Our advice? Impress your friends with technology that works better for you, the user.

• Email: MossbergSolution@wsj.com