The latest to arrive is the Samsung Instinct, to be introduced by Sprint (S) on June 20. I’ve been testing the Instinct, and while it isn’t a bad phone and has some features the Apple product lacks, it’s no match for the iPhone. The manufacturers haven’t replicated the iPhone’s greatest strength: beautiful, powerful, breakthrough software.

Samsung Instinct

Also, the timing of the Instinct is unfortunate. It was designed to go up against the first iPhone. Sprint even has a Web site (nowisgood.com) comparing the two devices. But the Instinct will go on sale only three weeks before Apple and AT&T (T) start selling the new 3G iPhone, the second-generation model announced earlier this week. This second iPhone model corrects some of the first model’s main weaknesses, wiping out some advantages Sprint hoped the Instinct would have.

Before getting into the details of the Instinct, a few words about the new iPhone, its main competition. I don’t do full reviews of products until I have tested them extensively, but my first impressions of the 3G iPhone are largely positive.

The price of the new iPhone’s base model, which comes with 8 gigabytes of memory, is $199, a 50% price cut from the comparable first-generation model. Yet, it now works on AT&T’s fastest data network, promising anywhere from two to five times the speed of its predecessor. It also has GPS for tracking your location, and fully supports over-the-air synchronization of email, contacts and calendars — through Microsoft (MSFT) Exchange in corporations or via a similar new consumer service from Apple called MobileMe. And you’ll be able to download directly to the phone a whole universe of third-party programs, from productivity software to games.

On the downside, the new iPhone’s camera remains very basic and still can’t capture video. For people who prefer physical keyboards, the iPhone will still fall short. It continues to include only a virtual onscreen keyboard. And the iPhone remains locked to a single carrier in the U.S., AT&T, which will charge $10 more per month for unlimited data consumption on the device.

The iPhone, along with some competitors like the BlackBerry, are really hand-held computers that happen to make voice calls. And they’re getting more powerful and innovative. So far, competitors like the Instinct, while trying to look like iPhones, are still mainly voice devices with so-so computing features tacked on.

For instance, while the Instinct is a touch-screen device, it lacks the iPhone’s “multi-touch” system, which includes features that recognize multiple fingers and gestures, and allows actions like shrinking a photo by “pinching” it. The touch system on the Instinct is more like that on an ancient ATM than a cutting-edge gadget, even though it has a gimmicky feedback mechanism that gives you a tiny vibration-jolt when you press an icon.

Physically, the Instinct looks a lot like the iPhone — a dark slab without a physical keyboard or many buttons dominated by a large screen. It’s a bit longer and thicker than the iPhone, but a tad narrower and lighter. Its screen is smaller than the iPhone’s and has lower resolution.

The Instinct has the same $199 price tag as the new iPhone, after a rebate and with a two-year contract. Service plans are likely to start at around $70, in line with the minimum monthly fee AT&T will charge on the new iPhone. But it comes with just one-quarter of the memory the base iPhone includes.

Like the 3G iPhone, the Instinct runs on a fast cellular network that promises speeds similar to what people get with slow home DSL service. In my tests, it seemed to deliver this promised speed. It also has GPS and navigation. But, unlike the iPhone, the Instinct lacks Wi-Fi wireless networking, which can often be faster than the cellphone networks or available where there is no speedy cellphone coverage.

The Instinct has a removable battery, something the iPhone lacks. And Sprint claims 5.7 hours of talk time on one charge, more than the five hours that Apple claims for its 3G model. Sprint’s new baby has a few other features that even the latest iPhone omits, such as a built-in service for viewing TV shows and a voice-command system.

But I found its email system and Web browser to be less sophisticated than the iPhone’s or the BlackBerry’s. I also thought the phone’s onscreen keyboard was harder to use than Apple’s. It would flip unpredictably from landscape to portrait mode. The Instinct does allow handwriting recognition as an alternative, something the iPhone doesn’t.

If you’re a devoted Sprint customer, or want to avoid AT&T, the Instinct is an OK choice. But it’s no iPhone.

• Find all of Walt Mossberg’s columns and videos online, free, at the new All Things Digital Web site, http://walt.allthingsd.com. Email him at mossberg@wsj.com.

But what if you only have a standard cellphone with a lousy Web browser — or even the best Web-browsing phone, but it lacks a fast data connection? What if you’re speeding down the road in a car, where typing is dangerous?

Now, there’s a way to get your questions answered despite those hurdles. It’s a free cellphone service that lets you ask any question answerable via a Web search, using any cellphone, by simply making a voice call. It’s called ChaCha, and I’ve been testing it out.

To use ChaCha, you just dial 800-2chacha (800-224-2242) and state your question. In a few minutes, you’ll get an answer via text message. In one test, I asked ChaCha who was the winning pitcher in the previous night’s Red Sox victory against the Yankees. In a few minutes, I received a text message with the correct answer: Daisuke Matsuzaka.

ChaCha requires no registration and works on any cellphone carrier. It needs no special codes or key words. You just state your question as if you were asking a friend. If you prefer to type your question, you can text it to “ChaCha,” or 242242. Though ChaCha itself charges no fees, your phone carrier may charge for the minutes you use, or for the text messages.

The service works by routing your questions to one of 10,000 hired “guides” — students, stay-at-home parents, retirees and others — who look up the questions on the Web and reply. They get paid 20 cents per answer.

Naturally, these guides vary as to their speed and accuracy. If you don’t like the answers they give you, or you want related information, you can call back or reply to the text message with a follow-up question. For instance, after learning which pitcher had won for Boston, I asked who lost the game for New York. I was quickly informed it was Phil Hughes.

Overall, I liked ChaCha. In most cases, I received fast, accurate, useful answers. But it has two weaknesses. One is that the low-paid, part-time guides can provide inconsistent service. When I asked for the best Mexican restaurant in D.C., for example, ChaCha came up with a choice that few locals would cite.

The other is that, unlike many other cellphone information services, ChaCha doesn’t automatically know your location. So, unless you include a location in your query, it’s clueless about questions such as “Where’s the nearest drugstore?”

ChaCha is hardly the only information service for cellphones. Google offers a text-message service where you can ask questions on a wide variety of topics, and a voice-based service that locates businesses near your location. Microsoft’s TellMe subsidiary just introduced a voice-based service that answers location-specific questions about businesses, weather, traffic and movies, and displays the answers on the screens of BlackBerrys.

But these competitors are more limited than ChaCha in key respects. Google’s broader mobile-search service, Google SMS, requires that questions be sent via text message using special key words. Its voice service, Goog411, finds only local businesses. TellMe’s new service is limited to location-based information and works only on certain phones.

I tested ChaCha using three very different phones: a cheap, bare-bones Samsung flip phone from Sprint; a midrange Motorola Razr from Verizon; and an Apple iPhone running on AT&T. I asked questions via voice and text from various locations, including my car, where I used a hands-free microphone.

I asked about sports, TV shows, journalism, history, weather, nutrition, demographics and shopping. ChaCha handled most of these inquiries correctly and was able to fix most of its errors after I asked follow-up questions. For each question, it sends two text messages: one restating your query and saying it’s working on it, and the second containing the answer.

Each ChaCha answer is accompanied by a Web link. If your phone has a decent browser, you can go to that link to learn who the guide was, and what his or her Web-site source was.

ChaCha gave me the weekend weather forecast in Boston, the date of death of Abigail Adams and the cast of the TV show “Brothers & Sisters.” It provided Peyton Manning’s salary and the sodium content of a McDonald’s quarter pounder. Its most impressive performance came when it correctly answered an obscure historical question: “When was the Gaspee burned?” The Gaspee was a British tax-collection ship burned in Rhode Island in 1772 in what is often considered the first act of war of the American Revolution.

The company is working on adding automated location knowledge, at least on certain carriers and phones. For now, you can tell it your location by sending a special command via text message. But even without the location features, ChaCha is a fun and useful service.

Find all of Walt Mossberg’s columns and videos online, free, at the new All Things Digital Web site, http://walt.allthingsd.com. Email him at mossberg@wsj.com.

Corrections & Amplifications

ChaCha, a mobile-phone search service, is incompatible with several small U.S. cellphone carriers. This column incorrectly said that the service works on any cellphone carrier, based on incorrect information supplied by the company.

Unfortunately, every attempt at this concept has included too many compromises to justify their often surprisingly high prices. I’ve been testing the latest effort at such a device, the Eee PC, from a Taiwan-based laptop maker called Asus. It does better than some of the earlier contenders in certain respects, such as text entry and price. But it still is likely to prove unsatisfying for many road warriors.

Asus doesn’t even call the Eee a computer, referring to it as a “mobile Internet gadget.” Instead of using Microsoft Windows as its operating system, the Eee uses a specially designed version of the open Linux operating system, and comes preloaded with a variety of open-source programs for Web browsing, performing office tasks, playing music and videos, running games and managing photos.

The Eee has a much smaller footprint than even the subnotebook category of laptop, such as the much-publicized MacBook Air unveiled by Apple this week (which I’ll review after I have thoroughly tested it), or subnotebooks from Sony and Lenovo. It weighs a mere two pounds, is just under 9 inches wide and just over 6 inches deep. It is thicker than the new Apple and some other subnotebooks, ranging from 0.79 inches at its thinnest point to 1.26 inches at its thickest. The overall effect is small, but stubby.

The Eee’s price is only a fraction of what typical subnotebooks cost — from $300 to $500, depending on configuration. The model I tested, called the Surf, is the base $300 entry. With its pastel blue lid, and tiny size, it looks like something Barbie might use. But it can perform real work, even though it comes with only 512 megabytes of memory and a scant two gigabytes of storage space.

One reason the device costs and weighs so little is that there is no hard disk. Files are stored on memory chips. It is possible to add storage by popping in a flash memory card or by connecting a USB drive to one of the three USB ports.

Unlike some computers in its category, the Eee isn’t a tablet. It takes the clamshell form of a traditional laptop and, when opened, reveals a full, if very cramped, keyboard. By including a real keyboard and charging so little, Asus has overcome two of the problems that plagued Samsung’s Q1 ultramobile computer awhile back.

Asus Eee PC

The user interface on the Eee is simple and clear. It consists of tabs labeled Internet, Work, Learn, Play, Settings and Favorites. Each tab contains large, colorful icons. For instance, the Work tab includes icons for Documents, Spreadsheets and Presentations. These tabs lead to various modules of the free OpenOffice suite, a competitor to Microsoft Office.

The Internet tab has various icons, such as Web Mail, Web and Wikipedia, that open the Firefox Web browser. You get to this tabbed screen by just pressing a Home button.

In my tests of the Eee, I was able to use all manner of Web sites, send and receive Web-based email, compose and open Microsoft Word documents from other computers, play music, and view photos.

So, with a low price, a small size, a real keyboard, and a clean user interface, what’s not to like about the Eee?

Well, for starters, its tiny 7-inch display is just too stingy for serious work. You can make up for a small screen size with high resolution, but the 800 by 480 resolution on the Eee — which can’t be changed — is so wimpy that very few lines of text can be seen at any one time. This means you’ll have to do so much scrolling, it’s likely to drive you crazy.

Also, the lack of a hard disk, and the relative paucity of truly simple Linux software, means that most nontechie users will be stuck with the included programs, which can’t be removed and which don’t include a calendar or contacts program, or even an email program. You can only use Web-based email.

And just below the Eee’s simplified user interface lurks the complicated terminology and software design characteristic of Linux. Some error messages I saw were indecipherable.

Beyond that, many of the Linux programs included were far cruder and harder to figure out than, say, Microsoft’s Photo Gallery or Apple’s iTunes. The Eee wouldn’t automatically reconnect to a known wireless network, and it wouldn’t recognize my Kodak digital camera.

Some of these problems can be solved if you install Microsoft Windows XP on the Eee. Asus includes instructions on doing so. But you have to supply your own copy of Windows.

The Eee is a valiant effort, but it still has too many compromises to pry most travelers away from their larger laptops.

Email me at mossberg@wsj.com. Find all my columns and videos online, free, at the new All Things Digital Web site, http://walt.allthingsd.com.

Yes, more cars are making it easy to connect wirelessly with Bluetooth-equipped cellphones so drivers can make hands-free phone calls — but not hands-free text messaging. And that results in the dangerous practice of texting while behind the wheel.

And, yes, you can pipe the sound from your portable music player into the car’s speakers. But you usually have to control the song selection and skipping by handling the player itself, and that’s another dangerous distraction.

Some car makers solve this music problem with integration kits that transfer control of the music player to the dashboard or steering-wheel controls and display song information on a dashboard screen. But this option is most common in luxury cars and is typically designed only for Apple’s iPods.

Now, Ford Motor, working with Microsoft, has come up with a system that’s a big step forward in integrating cellphones and portable music players into cars. It’s highly versatile and works with numerous devices on a wide range of Ford models.

I’ve been testing the $395 option, called SYNC, with multiple cellphones and music players. It’s quite good and indicates that the digitally backward auto industry finally may be getting it.

SYNC combines the often separate cellphone and music-player functions into one unified interface that can be controlled by a voice-recognition system that works well. You can command it by voice to play a single song out of thousands on your iPod or other music player. With some phones, it will even read your incoming cellphone text messages to you, and properly pronounce text-message shortcuts such as LOL (Laughing Out Loud.)

Ford isn’t limiting this system to luxury cars. It’s available on a dozen models — including the company’s least-expensive car, the Ford Focus. I tested SYNC on a Focus.

SYNC simultaneously handles multiple cellphones and music players from a variety of companies. It imports and remembers the address books and song information for up to 12 phones and four players, so that as you connect and reconnect a remembered device, wired or wirelessly, it is ready to go. It doesn’t have a hard disk and doesn’t store your music.

Unlike other approaches, the Ford system doesn’t require a special cable or proprietary connector. It uses a standard USB port and the cable that came with your player. SYNC will even play music directly from a USB thumb drive. There’s also an audio-in jack for players that don’t support USB, or which require both.

SYNC can even stream music wirelessly, over Bluetooth, from the cellphones that support this feature. However, due to limitations in Bluetooth, it doesn’t transfer song selection controls, or the song information display, to the dashboard in this scenario. The same limitation applies if your player can be connected only with the audio-in jack.

I tested SYNC with two music players and four cellphones and the system handled them all effortlessly. I used a year-old iPod and a new Samsung P2 as my test music players, and SYNC quickly transferred their song information and allowed me to select playlists, artists, albums, genres and individual songs by voice command.

I tried the cellphone functions with an Apple iPhone, a Motorola RAZR, a RIM BlackBerry and a new HTC Shadow phone and, again, all worked properly. While phone calls and address-book imports were handled easily on all the phones, some of SYNC’s advanced functions, like the reading of text messages and the streaming of music, aren’t widely supported on all phones. For example, only the RAZR worked with the text-message feature.

The iPhone test was especially interesting because it is both a Bluetooth-equipped phone and a full-fledged iPod. The SYNC treated it as both, simultaneously.

I found the voice-command system surprisingly reliable. In four days of testing, I encountered only a few instances in which my commands were misunderstood.

SYNC has some limitations. While it can read text messages on compatible phones, Ford didn’t build in the ability to dictate and send text messages. You can send only canned messages, like “Be there in 20 minutes.”

But there are a lot of advanced features — too many to list here. And Ford plans to add others, which owners will be able to install at home. Detailed information on the system is available at syncmyride.com.

Alas, I did discover one glitch. Twice during my testing, SYNC mistakenly declared that a music player had been unplugged when it hadn’t been. The system recovered with a little fiddling, but Ford needs to fix this.

Still, SYNC is a very well done method for integrating digital devices into a car, and in a model that most people can afford.

Email me at mossberg@wsj.com. Find all my columns and videos online free at the new All Things Digital web site, http://walt.allthingsd.com.

Well, one of the American phone carriers, T-Mobile USA, has taken a step toward that ideal. It’s offering inexpensive phones that can make voice calls over either the company’s regular cell network or almost any Wi-Fi wireless network, including those inside your homes; open, password-free networks outside your home and T-Mobile’s system of 8,500 U.S. Wi-Fi hot spots in places like Starbucks shops.

These phones can switch seamlessly between Wi-Fi and T-Mobile’s regular cellphone network, even in the middle of a call, without dropping it, so you can just keep talking as you move in and out of Wi-Fi range. For instance, you can start a phone call at work over Wi-Fi, then get in a cab and the call will automatically switch to the T-Mobile cellular network. The process also works in reverse.

Even better, calls conducted over Wi-Fi, or calls that merely begin on Wi-Fi and then switch to the cellphone network in the middle, aren’t counted against your monthly allotment of minutes — no matter how long they use the cellphone network. (Alas, it works the other way as well. Calls begun on the cellphone network do consume minutes, even if they switch in the middle to Wi-Fi.)

Other cellphones have this built-in Wi-Fi, including Apple’s famed iPhone. But in these phones, the Wi-Fi is intended primarily for data use — Internet or email — not voice calls.

I’ve been testing T-Mobile’s new system, called HotSpot@Home, with a $50 Nokia 6086 flip phone and it works pretty well. I was able to start or finish calls at my home with my existing Wi-Fi setup and use an optional wireless router T-Mobile offers. The system also worked in several Starbucks in different cities, and in several commercial locations with open Wi-Fi service.

In general, my test calls switched seamlessly between the Wi-Fi and cellphone networks, and call quality was good. But in a couple of cases, the calls broke up or were dropped.

Of course, this cool new setup isn’t free. HotSpot@Home is an add-on feature to a regular T-Mobile calling plan. Through Sept. 25, it costs $10 a month for a single line and $20 for a family plan that covers up to five lines. If you sign up by then, you keep those introductory rates ever after. As of Sept. 26, the monthly fees increase to $20 for a solo line and $30 for the family plan. These are flat fees that don’t vary by how much calling you do.

There are downsides. The only phones available now, the Nokia and a Samsung, are very basic $50 ones with a two-year contract. However, T-Mobile expects to offer more phones. In a few weeks, it will sell a modified version of a sophisticated smart phone. The company refuses to identify the phone, but Web rumor sites suggest it’s a new version of the BlackBerry Curve with Wi-Fi built in.

Another downside: The first two phones don’t work with Wi-Fi networks that require log-in screens, other than T-Mobile’s. So, you can’t use other providers’ networks in hotels, airports and similar places. The phones lack decent Web browsers, and T-Mobile has automated access only to its own hot spots. Future smart phones with better Web browsers should overcome this limitation, but you might have to pay usage fees to the owners of non-T-Mobile networks.

Also, the phones don’t automatically connect to newly encountered Wi-Fi networks, so it takes time to go through the steps necessary to set up the new networks. They do automatically connect to networks used before that you’ve saved.

Also, making calls over Wi-Fi takes more battery life. Talk time on these first phones using the power-hungry technology is only two-thirds what it is on a regular cell network.

Finally, the flat-rate fee for unlimited Wi-Fi calls covers calls only to U.S. phones and doesn’t work from T-Mobile hot spots overseas.

Still, if you have lousy cellphone coverage at home or your office or tend to use a lot of monthly minutes, and you have access to Wi-Fi, the new HotSpot@Home could be a promising option.

Email me at mossberg@wsj.com. Find all my columns and videos online free at the new All Things Digital Web site, http://walt.allthingsd.com.

So, last year, when Samsung introduced a new class of tiny Windows computer called the Ultra-Mobile PC, I gave it a harsh review and advised waiting for an improved model. That first effort, the Q1, was spurned by consumers, despite the high hopes of Microsoft and Intel, which conceived the UMPC.

But Samsung now has come up with a much better version, called the Q1 Ultra, which will go on sale at major electronics stores starting next month.

I’ve been testing the Q1 Ultra and, at least for certain classes of users, I believe it’s a pretty good product, despite some lingering downsides and compromises. It addresses the biggest weaknesses of its predecessor and throws in other improvements, yet starts at a significantly lower price — $799 compared with $1,099 for the original Q1.

The biggest improvement: Even though the Ultra is a tablet computer, still able to accept handwritten notes and meant to be controlled by a stylus, this new model now has a built-in keyboard. It’s just a tiny BlackBerry-style keyboard but it makes writing emails and typing in Web addresses practical.

The Samsung UMPC still isn’t a mainstream product, or one that I’d recommend for most average users. It does run the full version of Windows Vista or Windows XP, but it’s still too compromised to replace a small laptop for most folks.

However, I do see the Q1 Ultra as a decent choice for people willing to put up with some limitations in return for the ability to carry a real Windows computer that is as small as a thin hardcover book and weighs almost nothing. These users include students and frequent business travelers who mainly want to take notes, write emails, do instant messaging and Web surfing, and play music and videos. For people who want to do a lot of word processing, or to create spreadsheets or presentations, it would be better to stick to a small laptop.

The Q1 Ultra is a sleek, shiny, black tablet with a bright, sharp seven-inch screen that feels great in the hand and has a built-in stand on the back so it can be used upright. It weighs about 1.5 pounds, is less than nine inches long and five inches wide, and is under an inch thick. It’s slightly smaller and lighter than last year’s model.

The Q1 Ultra is run by a special, low-horsepower Intel processor and has only one gigabyte of memory, which can’t be expanded. But it runs Vista acceptably, if not exactly speedily. You can get one with Windows XP for faster performance.

Samsung’s Q1 Ultra

The main flaws in the first model were a high price, the lack of a keyboard, a screen that had too little resolution to manage Windows, weak battery life, no built-in mouse buttons and no built-in cellphone modem to augment its built-in Wi-Fi wireless networking.

In the new Ultra model, the built-in keyboard, meant for thumb typing, is split, with half of the keys on either side of the screen. This approach looks daunting, but works pretty well once you get the hang of it. Unfortunately, Samsung and Microsoft didn’t build any intelligence into this keyboard, so it doesn’t automatically complete words, add punctuation and capitalize the first letters of sentences, unlike the keyboards on most smart phones.

While still the same size, the screen is both brighter and has a higher resolution, so open windows can be easily moved and closed. There are now mouse buttons and an optional internal high-speed cellphone modem is available. The navigation pad is simpler and is easily programmable, though you have to manually set its arrow keys to mimic the arrows on a real keyboard.

Alas, the battery-life problems remain. In my tests, where I turn off all power-saving software, use maximum screen brightness, turn on the Wi-Fi and play an endless loop of music, the standard battery lasted just two hours and five minutes, which translates to about three hours in more normal usage. The $99 optional extra-large battery, which adds a little bulk and weight, did only about 50% better.

And this little computer can still be pricey. The base model is $799, but there are three better-equipped models that can range up to $1,499. That’s almost as much as a tiny Fujitsu tablet with a regular keyboard, and way above Microsoft’s $500 target price for the UMPC.

Another big problem is start-up time. Even with no programs running, it took me over four minutes to reboot the Q1 Ultra and over two minutes to boot it after a complete shutdown. To speed up start times, Samsung suggests either turning off Vista’s snazzy graphics or ordering the one model with Windows XP, which costs $1,149.

Still, if you don’t do a lot of document creation, and value small size and weight enough to put up with some hassles, the UMPC finally is an acceptable choice.

• Email me at mossberg@wsj.com. Find all my columns and videos online free at the new All Things Digital Web site, http://walt.allthingsd.com.

The latest, and most unusual, of these music phones has just been announced by Sprint. It’s a Samsung model called the UpStage. The UpStage costs just $149, less than a third of the iPhone’s planned $499 price, and it will go on sale early next month.

Samsung has shown real creativity in solving the problem of cramming a decent music player and phone into one small gadget. The slim UpStage has been designed with two distinct faces. On one side, it has a phone keypad and a small screen, for making voice calls and tapping out text messages. But if you turn it over, you see a larger screen and navigation controls, mainly for playing music, but also for other tasks, such as viewing online data.

Sprint’s UpStage music cellphone by Samsung.

At the same time, Sprint is slashing the price of songs sold on its proprietary music service from an outrageous $2.49 each to just 99 cents. That isn’t quite as cheap as it seems, because you have to pay $15 a month for the privilege of buying the 99-cent songs. But it’s still a positive step for consumers.

I’ve been testing the UpStage and found that its two-sided design works pretty well. It’s a better music phone, in my opinion, than Verizon’s Chocolate model, built by Samsung’s Korean rival, LG.

But the UpStage has too many weaknesses and compromises for me to recommend it. It has lousy battery life, both as a phone and as a music player, a limitation Sprint and Samsung have tried to offset with a free add-on that makes the phone too bulky. And it comes with so little memory that, out of the box, it can hold only around 20 average songs. Adding more capability costs extra, thus lessening the price advantage. There are other downsides as well.

I tested the UpStage primarily as a music player, because that’s its claim to fame. I compared it with the base-model iPod Nano, which also costs $149, although of course it doesn’t include a phone.

I did try out the basic phone stuff, like making calls, all of which seemed OK, though the screen on the phone side of the device is very small, a sort of throwback to early cellphones. Sound quality, reception and the keypad all were fine. The built-in 1.3 megapixel camera is standard for phones these days.

Only one of the phone’s two screens can be used at any one time, and you have to press a “flip” button on the side to switch. This worked well, but was kind of a pain when I was trying to use the keypad to type in text, like a Web password or the name of a new song playlist, on the music side of the phone. I had to flip to the side with the keypad and then flip back.

I loaded in about 20 songs and the UpStage played them back pretty well, displaying all the correct song information and album art. I also loaded in some photos, which also displayed fine, though the phone can handle only small picture files. I purchased a song from Sprint’s music service, and that downloaded and played well.

The only problems were that the album covers and photos looked grainy, because even the larger screen has pretty low resolution. And occasionally, the start of a song was clipped. The iPod Nano exhibits neither of these problems.

Out of the box, the UpStage comes with only a tiny memory card, which can hold only around 20 standard MP3 files. The iPod Nano can hold 500 of those files. To get the same capacity on the UpStage, you have to buy a larger, $40 memory card.

Though the UpStage is bigger than the iPod Nano, it has far worse battery life — just 2.5 hours of talk time for the phone and seven hours of music playback time, compared with up to 24 hours of music playback time for the Nano. To compensate, Sprint is throwing in a “battery wallet,” a case with an additional battery built in. This brings the talk time to 6.3 hours and music playback time to around 17 hours. But it makes the phone twice as thick.

There are two other problems with the UpStage. First, synchronizing its music with songs stored on a PC requires you to install and use Sprint music software. It doesn’t work with Windows Media Player or the Windows version of Apple iTunes, which most music lovers already own. (You also can manually drag and drop songs onto the phone’s memory card.)

Second, the navigation pad on the music side of the phone can be confusing. It works by touch controls; you have to use just the right pressure and slide your finger just the right distance along its sides to get it to work right. It’s too complicated.

Samsung and Sprint deserve credit for a good try with the UpStage. But it doesn’t quite cut it.

Email me at mossberg@wsj.com. See video versions of my reviews at wsj.com/mossbergvideo.

The FlipStart is part of a new wave of tiny Windows PCs, which include the second version of a machine called the OQO, the Ultra-Mobile PC from Samsung and Sony’s UX series. For a decade or more, the computer industry has been trying to come up with an ultracompact computer that can use standard operating systems and software. They have failed to catch on broadly for several reasons.

First, they are an awkward, in-between size: too large to fit in a pocket, but too small to allow for minimally comfortable touch-typing keyboards. Second, their screens are often too small to handle the navigation through multiple windows that Windows requires. Third, their battery life has been poor. Finally, they’ve been very costly.

I’ve been testing the FlipStart and found that while it overcomes some of these issues, it can’t lick all of them. It runs Windows OK and it even has decent battery life. Its screen resolution and navigation are also pretty good. It weighs just 1.75 pounds, and is smaller in length and width than a standard paperback novel.

But its price, $2,000, is very expensive for a computer that’s too small to be very good for typing, yet isn’t small enough to be extra portable. Part of the size problem is that it’s thick — thicker than a 400-page paperback. And I found its keyboard to be too little and crude for laptop-style typing, but too wide for fast thumb typing, like people do on a BlackBerry. It also exhibited some funky behavior in my tests.

So, like its predecessors and competitors, the FlipStart is likely to be a novelty or niche product. It may be popular with some techies, but it’s no match for a small standard laptop, like Lenovo’s X models, which start at $1,250, are 2.7 pounds, are thinner than the FlipStart, and include a great keyboard and a screen that’s more than twice the size of FlipStart’s.

The FlipStart, which goes on sale March 27 on the company’s Web site, flipstart.com, is also much larger and heavier than the new second model of the OQO, which weighs just one pound. The new OQO, on sale next week at oqo.com, is also less costly, starting at around $1,500. Like the OQO, the FlipStart can also run the new Windows Vista, as well as Windows XP.

The FlipStart is designed as a clamshell, with a flip-up lid, like a laptop. It can be used in an L-shape, like a laptop, on a desk or table. The OQO’s keyboard slides down from behind its screen and you type on it while holding it vertically, like a smart phone. The FlipStart can be used that way, too.

The FlipStart’s 5.6-inch screen is bright and vivid, and it has a resolution of 1,024 by 600, less than most laptops, but much better than the new OQO’s. There’s a zoom feature that can be adjusted with a handy scroll wheel on the side, which is also used for scrolling through text.

There’s also a second, tiny screen in the lid, so you can see your email, contacts and calendar when the FlipStart is closed. Special navigation software on the main screen offers the same information.

In my tests, the FlipStart handled Microsoft Word, the Firefox Web browser, Picasa photo software and Apple’s iTunes quite well.

In my tough battery test, in which I turn off all power-saving software, turn on the Wi-Fi, crank up the screen brightness and play music endlessly, the FlipStart did surprisingly well. It clocked in at about 2.5 hours, which means you’d get three hours or more with typical usage. The slimmer, lighter new OQO got just 1 hour, 48 minutes.

The FlipStart includes both Wi-Fi wireless networking and a built-in cellphone modem that uses the fast EV-DO network. Both worked in my tests, as did wired networking via a snap-on port replicator that lets you connect a full-size monitor, keyboard, mouse and speakers.

But I ran into some problems. The unit too often failed to connect to Wi-Fi networks. Also, at one point, the FlipStart logged me out of Windows every time I typed the letter “L” in any program. Microsoft Outlook crashed on me repeatedly.

The keyboard, despite its typing flaws, has some nice aspects. It includes a touch pad and a pointing stick, to replace a mouse, and special keys for quickly performing various functions, such as getting to the desktop and switching open windows. But for thumb typing, I much preferred the OQO keyboard, even though it’s smaller and even though FlipStart commissioned a study showing its keyboard was better.

I think the solution to making better hand-held computers is in ever-more-potent smart phones, like Apple’s forthcoming iPhone, rather than in shrunken laptops like the FlipStart.

• Email me at mossberg@wsj.com. See video versions of my reviews at wsj.com/mossbergvideo.

The convergence of the computer and consumer-electronics businesses, including the mobile-phone business, is accelerating. Apple dropped the word “computer” from its corporate name last month and announced its new iPhone big-screen cellphone, to ship in June. Hewlett-Packard quietly announced its first real mobile phone last week. Smart-phone makers Palm and Research In Motion are really hybrids of cellphone and computer companies.

Meanwhile, traditional mobile-phone makers like Motorola, Nokia and Samsung have all turned out smart phones, which are, in effect, little computers, with the ability to handle email, multimedia, Web browsing and more.

Nokia, long the leading mobile-phone company, has been pursuing an even more radical project — a hand-held computer that isn’t a cellphone at all. It has just brought out the latest version of this product, the $399 N800 Internet Tablet, and I’ve been testing it. The N800 is part of a long-term strategy by Nokia to evolve into a company that’s more a maker of small multimedia devices with connectivity, rather than primarily a maker of phones.

The N800 is an overhauled version of the 770 I reviewed last year. That model, priced at $360, was so underpowered as to be almost useless. The new one is speedier, more powerful, thinner and lighter, albeit a bit longer. Like the 770, the N800 is designed to connect to the Internet via a Wi-Fi wireless network, though it can use a cellphone as a modem. Like the 770, it uses a touch screen and virtual keyboard.

The new model has some nice features the 770 lacked, like a pop-out video camera, and the ability to make voice calls over the Internet. It can take two standard memory cards, rather than the one oddball card the 770 accepted. Like the 770, it does a far better job of browsing the Web than any smart phone on the market today.

The screen, like the 770’s, is huge — 4.2 inches diagonally — and with a stunning resolution of 800 x 480, significantly larger and sharper than the much-touted iPhone screen.

But, like the 770, the new N800 is a good example of how hard it is for a company that grew up in one business to migrate successfully to another. I can’t imagine many people carrying around this device. For one thing, the N800 is a tweener — smaller than a laptop, but too big for a pocket. It’s 5.7 inches long, 2.95 inches wide and 0.5 inch thick. It weighs 7.27 ounces. The iPhone is smaller and lighter.

More importantly, the N800’s software seems unpolished and unfinished. There’s no calendar application, no method for synchronizing data from a PC, no software for using the camera to record videos or snap still pictures, though Nokia says that’s coming. And there’s no simple way to use the camera for video conferencing with a PC, unless you get somebody else to download a special Nokia program. The company hopes to solve this later with a Skype program for the device. You can make a video call to another N800.

The N800 Internet Tablet, $399, has a touch screen.

Nokia is hoping that open-source developers will help polish the N800’s software and add functions. This is an idealistic goal, and has won the hearts of some techies. But mainstream consumers expect complete functions on the device, out of the box. Third-party software is a great thing, but it isn’t a substitute for strong software from the manufacturer.

Still, the N800 does some things well. Web browsing is a pleasure, because pages render much like they do on a real PC, and you can see a much larger portion of each page than you can on a typical phone, even a Windows Mobile or Palm model. Handy buttons on the top of the Nokia make this even better, by zooming in or out on the Web page, or instantly hiding the navigation controls so the page can claim the whole screen.

Instant messaging also worked well, although the only prominent service bundled with the N800 is Google Talk. I also successfully made and received Internet voice calls via Google Talk. These were clear and easy, though they don’t fully compensate for the lack of a built-in cellphone. An RSS feed reader, which sucked in headlines from various Web sites, was also good, as was the photo-viewing program.

The email program is fair, if pretty bare-bones and sometimes slow. BlackBerry addicts are unlikely to accept the onscreen keyboard in place of a real one. Some attachments, such as pictures or PDF files, open easily, but Word documents never even showed up in my tests.

We won’t know until June whether Apple has been able to successfully invade Nokia’s turf and make a decent cellphone. But so far, Nokia is struggling to go the other way.

• Email me at mossberg@wsj.com. See video versions of my reviews at wsj.com/mossbergvideo.

I attended the iPhone launch event, and was able to use one for a little while. That’s too brief an encounter to allow me to write a proper review. But I can say that it has the largest and most beautiful screen I’ve ever seen on a cellphone, even though it’s incredibly thin. It felt great in my hand. It has a brilliant new user interface; the handsomest email program and Web browser I’ve ever seen on a phone; a full-blown iPod music and video player built in; and even a cool new voicemail system.

The iPhone has some potential downsides — it doesn’t use a physical keyboard, instead relying on a virtual keyboard on the screen, which may put off heavy email users. It runs on the relatively slow EDGE cellular data network, though that flaw is partly offset by the fact that it can also use speedy Wi-Fi wireless networking. And, with a $499 base price, it’s expensive.

Still, the iPhone made my relatively new Treo 700p seem primitive in many respects when I compared them side by side. And the Apple product isn’t Palm’s only problem.

Palm’s position as the design leader in smart phones has been under assault for months. Major phone makers like Motorola and Nokia have introduced models that have most of the Treo’s capabilities but are thinner, sleeker and lighter — and much less expensive.

The Treo maker is starting to respond, but haltingly. It has brought out a couple of slightly smaller new models, but they’re no match in sleekness or style for competitors like the Motorola Q. They also aren’t as cheap. They do, though, have some advantages in software and functionality that, for some users, will make them preferable.

I’ve been testing the latest skinny contender, the Samsung BlackJack, along with Palm’s newest Treo, the slimmed-down Treo 750. Both of these phones — like the Apple phone — run on the Cingular Wireless network. Both also use Microsoft’s Windows Mobile software.

The new Treo 750 is slimmed down a bit from the familiar Treo 700 and 650 models. The 750 is also a little shorter, because it does away with the protruding antenna. In addition, it’s a hair thinner and about 16% lighter.

But next to the new Samsung BlackJack, the Treo 750 looks bulky. The BlackJack is a striking, all-black model in the slim tradition of the Motorola Q. It manages to cram a full keyboard, like the Treo’s, into a body that is much sleeker and better looking. The BlackJack is 35% lighter — and 36% smaller overall — than the Treo 750. It has a physically smaller screen, but that screen has a third better resolution than the Treo’s. (Of course, both screens look tiny and grainy compared with the display on the new Apple phone.)

Also, the BlackJack claims 38% better battery life than the Treo, and it runs on a faster data network than the Treo. (Neither phone includes Wi-Fi.) And, to top it all off, the BlackJack is half the price — $199, compared with $399 for the Treo 750.

One of the Treo’s biggest advantages has been its Palm software, which I consider to be better designed for email and phone calls than the Windows Mobile software from Microsoft. But the new 750 model can’t claim that advantage because, while it has Palm hardware, it uses the Microsoft software.

The Treo does have a small software advantage over the BlackJack. It uses a fuller version of Windows Mobile that has more features than the stripped-down version used on the BlackJack and the Motorola Q. And, because it has a touch screen, the Treo is easier to navigate than the BlackJack, which must be controlled with buttons and a scroll wheel on the side.

Also, the Treo’s control pad felt better to me than the BlackJack’s, which was cramped. I kept hitting other buttons on the BlackJack while trying to scroll or select icons.

In my tests, both the Palm and the Samsung sent and received voice calls well. Both also exhibited the clumsiness that is inherent in Windows Mobile — multiple key presses were needed to do simple tasks. Both have basic cameras with resolutions of 1.3 megapixels. (The Apple iPhone’s camera will be two megapixels.)

The BlackJack runs on Cingular’s new broadband data network, called “3G” or HSDPA, while the Treo 750 uses a slower network called UMTS. Oddly, however, in my tests, the Treo was generally as fast or even faster at retrieving Web pages than the BlackJack.

Of these two phones, I prefer the BlackJack. But if you’re in the market for a smart phone and can afford $499, you might want to wait until June for the Apple iPhone. The Apple entry is so full of promise that anyone buying a smart phone in 2007 should at least wait for the full reviews and a chance to try it out.

Email me at mossberg@wsj.com.