So, like a shark, Apple (AAPL) must keep moving. This week, it is introducing two new products designed to consolidate and increase its position as the leader in this new generation of hand-held computers. I’ve been testing both and I like them a lot, with some minor caveats.

One of the new products is a refreshed model of the iPhone itself, called the iPhone 3G S. It looks the same, but offers more speed, more memory, more battery life, and a few new features, including video recording and a better camera for still photos.

The second is OS 3.0, the third version of the iPhone’s operating system, which comes on the 3G S and also can be installed on all prior iPhones and Touches. It includes a much longer list of added features, some innovative and some long overdue catch-ups to other phones. These include such widely requested capabilities as cut, copy and paste; systemwide searching; a wider virtual keyboard; and a feature called MMS that allows users to send photos and videos directly to other phones without using email.

Apple last week also made a bold business move to complement these new products. It decided to keep making the current model, the iPhone 3G, and to slash its price by 50%, to $99. That’s an unheard-of price tag for a pocket computer of this power and versatility, and gives millions of additional consumers a reason to choose the iPhone instead of a competitor.

In my tests, both the new phone and the new operating system performed well, with a few small exceptions. I believe the two strengthen the iPhone platform, make it likely the iPhone will continue to attract scads of apps, and are good for consumers.

But I also regard these changes as more evolutionary than revolutionary, and I don’t think this latest iPhone is as compelling an upgrade for the average user as the 3G model was last year for owners of the original 2007 iPhone.

Current iPhone owners can get an improved product by merely sticking with their existing phones and upgrading to the feature-laden new operating system, which is free (it costs $10 for iPod Touch owners), rather than shelling out at least $199 for the new iPhone 3G S. And many new iPhone buyers can opt for the $99 3G model, which is not only cheaper, but also greatly improved by the new OS 3.0.

On the other hand, power users will crave the new model’s much-better performance, battery life, storage and other features. And some will want the new model because, unlike the current model, it’s capable of handling a new cellular network feature that, in the next few years, will offer double the current data speeds.

The new, free operating system is available for download starting June 17. The iPhone 3G S will go on sale June 19 for $199 for a version with 16 gigabytes of memory, and $299 for 32 gigabytes of memory. Those memory capacities are double the amounts offered on the previous model last year at the same prices, and far exceed the built-in memory on most competing smart phones.

These prices are for new U.S. customers on the AT&T network, plus current owners who are eligible for what AT&T (T) calls a “standard” upgrade. If you already own an older iPhone, you could pay $200 more to upgrade, depending on how far along you are in your two-year service contract and how much you spend monthly. But AT&T, stung by criticism in recent days, has just decided to offer the lower, new-customer prices at launch to iPhone 3G owners eligible for upgrades at any time up to Sept. 30 of this year, even if they were originally told they’d have to pay the $200 premium.

Before I detail the new features and how they worked in my tests, let me state up-front what the new iPhone and its new operating system don’t deliver. The iPhone still lacks a physical keyboard. It still can’t run more than one third-party app at a time, as the Pre does. Its otherwise excellent Web browser still can’t play videos created in Adobe’s Flash software, which is widely used on the Web. And it still isn’t available on any U.S. carrier besides AT&T.

Also, AT&T won’t enable MMS until late this summer, even though dozens of other iPhone carriers in other countries are doing so immediately. And AT&T hasn’t set a date by which it will offer tethering, a new iPhone feature that allows the device to be used as a modem for a laptop. Other carriers in other countries are allowing this right away.

Here’s a rundown of the most important new features of both the new hardware and software, and how they performed in my tests.

The iPhone 3G S

Speed: To me, this is the most important feature of the new iPhone 3G S. In fact, the “S” in the name stands for speed. During my week of testing, the new model proved dramatically snappier in every way than my iPhone 3G. Its processor is 50% faster than in the prior model, and it sports a new graphics chip.

Applications opened much more quickly. Web pages loaded far faster. The camera was ready to use almost instantly. And I never once saw the occasional, annoying iPhone behavior where you strike a key while typing and it sits there, seemingly stuck, before you can continue.

Cellular-data speeds were about the same, but in repeated testing on different Wi-Fi networks, the 3G S racked up speeds 30% to 50% faster than on the 3G running at the same time on the same networks.

Battery Life: On my 3G iPhone, I usually could make it through the day, but it was often a close call, with the battery indicator winding up in the red. By contrast, the new model did much better, never hitting the red zone and rarely requiring interim charging at the office or in the car, even though, because I was testing it, I was pounding it much harder than usual, making more voice calls, playing lots of videos and music, trying numerous apps, constantly downloading email from two accounts, and syncing two calendars over the air.

Apple claims about the same talk time for the new model as on the old, and about the same Web-surfing time over the cellular network. But it says the 3G S gets about 50% more battery life when playing videos or surfing the Internet over Wi-Fi and 25% more time — an astounding 30 hours — for continuous music playback.

Memory: With the new 32-gigabyte model, I was able to store over 3,000 songs, more than 1,600 photos, 74 videos, 67 applications, 400 emails, nearly 1,000 contacts, months of calendar data, and dozens of documents, and still have 5 gigabytes left over—more than most phones offer out of the box.

Camera: The new model’s camera has a 3 megapixel resolution, up from 2 megapixels, and has autofocus and a feature that lets you tap the screen to change the focus to an object or person in the background of a shot. It still lacks zoom or a flash, though it does better in low light. It also has a macro feature for close-up shots. In my tests, all of this worked, but I didn’t think the pictures it took were dramatically better than those on the old model, and it can’t compete with phones like Nokia’s (NOK) new $700 N97, which has a 5-megapixel camera with zoom.

Video: The new video recorder worked well, even in low light, and lets you post videos directly to YouTube, among other places. You can also trim your videos right on the phone. This all worked well, but the videos aren’t high definition, and pale in comparison to those on the latest HD model of the popular $229 Flip pocket camcorder.

Voice Control: By simply holding down the new iPhone’s home button, you can dial contacts and control music playback by uttering voice commands. The phone will even tell you which song is playing. Like most voice-recognition systems, this one isn’t perfect. But it worked most of the time.

Compass: I don’t consider this important for most users, but it did work when I was walking or driving. It can orient maps in the direction you’re heading.

Small Touches: You can optionally turn on a new battery indicator that shows a precise percentage of battery life left. The screen has a new coating that resists oil and grease from fingerprints.

Downsides: The new phone crashed on me twice during my tests. Once, the voice-control feature killed the sound on the built-in iPod, requiring a reboot. But I couldn’t replicate this problem. Another time, the phone froze while downloading a TV show. Apple blamed this on a prerelease server issue, and it didn’t happen again.

iPhone Operating System 3.0

Copy, Cut and Paste: Apple is late with this common feature, but it’s the best implementation I’ve seen on a phone. In a text page, you just double tap on a word, and it is selected with little handles around it that let you expand or contract the selected area. Then, you just click on a copy icon that pops up over the selection. To paste, you tap elsewhere in the page, or even in another app, and a paste icon pops up. Click that icon, and the selected text is pasted in. It worked well in all my tests.

The feature works a bit differently for some Web pages, where you hold down your finger over an area and it selects a whole block of text, like a paragraph, but still has the handles that allow adjusting the selection. It also allows copying and pasting photos. You can also just select a word or a section or a whole page of text and delete it. And if you want to undo a paste, just shake the phone.

Some Web pages and third-party apps don’t yet support this feature, but most do.

Search: Before, you could search only in the Contacts app. Now, there are search features in Mail, Calendar, the built-in iPod and Notes. And there is a way to search the whole phone at once. You just hit the home button, slowly, twice, and a special search screen appears. Type in any phrase, and it brings up every instance in multiple apps.

This is another catch-up feature, but it works well. For instance, when I searched for the word “Phil,” it brought up songs by Phil Collins, a note about Philadelphia, calendar items mentioning people named Phil or Phillips, emails to or from people with those names, and contacts for people named Phil or Phillips.

In email, the search function will even find messages that aren’t on your phone but that are stored on the servers of certain email services. For instance, I was able to almost instantly find emails from two years ago stored on Google’s (GOOG) Gmail.

One downside — in email, search looks for words only in email headers, not in the body of the messages.

Landscape Keyboard: In older iPods, the only built-in program that supported a wider, landscape keyboard, which is better for thumb typing, was the Web browser. Now, you can turn the phone horizontally and use a landscape keyboard in the Mail, Messages and Notes programs as well.

Find My iPhone: If you belong to Apple’s $99 a year MobileMe service, you can now locate a lost iPhone on a map on any computer, send the iPhone a message saying how to return it to you, and cause it to emit a beep, even if the sound is turned off. I tested this and it worked well. You can even remotely wipe all your data off the phone.

Voice Memos: The OS includes a Voice Memo app that lets you dictate reminders or other messages, and then edit and email them. I found it worked well.

Navigation: Another catch-up feature, turn-by-turn navigation with voice prompts, is also now supported. I tested this with a third-party app called Gokivo, and it did OK, though the developer admits to a prerelease bug I encountered.

Auto-Authentication: In the new OS, the iPhone can remember your log-in credentials for commercial Wi-Fi hotspot services, so you don’t have to enter them again and again. Unfortunately, in my tests with the AT&T Wi-Fi service, this failed repeatedly in several Starbucks (SBUX) shops. Apple blames a glitch in my prerelease phone’s SIM card.

Push Notification: To make up for its lack of multitasking, the new iPhone OS has a feature where third-party apps can notify you of new events, like a sports score, or a new invitation to an online game. I tried this with a game called TapTap Revenge, and it worked fine.

Stocks: The built-in stock application now has much more detailed data, including market cap, news headlines and price/earnings ratio for each stock.

MMS and Tethering: I couldn’t test these useful features because my tests were all done on AT&T, which hasn’t rolled them out.

Minor Touches: You can now move an icon among screens with one continuous motion, instead of stopping at each screen. And there are two more screens to house icons. You can finally synchronize Notes with your PC or Mac. You also can now maintain both calendars and contacts synced wirelessly with online services and those synced via cable with your computer. And you can play games and transfer files wirelessly over Bluetooth with other iPods or Touches that are nearby.

Bottom Line: Both the new iPhone and iPhone OS are packed with features that make a great product even better. But, for many users, the software may be enough of a boost to keep them from buying the new model.

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

http://ptech.allthingsd.com/20090311/the-littlest-ipod-packs-in-songs-and-finds-its-voice/ http://ptech.allthingsd.com/20090311/the-littlest-ipod-packs-in-songs-and-finds-its-voice/#comments Thu, 12 Mar 2009 01:02:05 +0000 Walter S. Mossberg http://ptech.allthingsd.com/20090311/the-littlest-ipod-packs-in-songs-and-finds-its-voice/ In these days of economic distress, it’s nice when technology companies add innovative features to the products at the bottom of their price ranges. So it’s notable that Apple’s cheapest iPod, the oft-forgotten Shuffle model, is getting smarter.

In fact, the latest iPod Shuffle, announced Wednesday and available now for $79, is the first portable music player I’ve tested that announces what’s playing. Push a button and it will tell you, in a computerized voice, the title and artist of whatever song you’re hearing. Keep holding that button and it will recite a roll call of all your playlists, allowing you to select among them. In my tests, this worked as advertised.

In addition, this new Shuffle is almost impossibly small. The company has moved the playback and volume controls off the device and onto a small, convenient module built into one of the earbud cords. That allowed Apple (AAPL) to severely shrink the player itself, which, like the two Shuffle models before it, lacks a screen. Apple claims it’s the world’s smallest music player, smaller than a AA battery or a house key.

The result is an iPod that contains four gigabytes of memory and holds 1,000 songs — twice the capacity of its $69 predecessor — yet is just a little blank rectangle of aluminum, available in silver or black. It’s a mere 1.8″ long, 0.7″ wide, and 0.3 inch thick — including a stainless-steel clip that’s built into the back for attaching it to clothing or backpacks.

This player is so small and thin that it reminds me of the popular “Saturday Night Live” skit in which an actor playing Apple CEO Steve Jobs shows off a series of tinier and tinier iPods culminating in a final fictional model that’s invisible. I actually dropped the new Shuffle while testing it and it took a couple of minutes to locate it behind a table leg.

After using this new iPod Shuffle for a few days, I can say that I like it. It does a good job at playing back music, podcasts and audio books. I found the speech function intelligible and helpful, and the earbud-mounted controls convenient and easy to master. And its tiny size and weight of about a third of an ounce make it an especially good choice for people who use their iPods while exercising.

Apple’s new iPod Shuffle

Only a single button appears on the iPod itself, as opposed to on the earbuds. It’s a sliding power button on the top edge that has three positions — one for “off,” one for shuffling your music, and one for playing your songs in order. Once you set this button, you never have to touch the iPod itself, until you want to turn it off.

The new speech-based navigation feature allows the Shuffle, for the first time, to handle multiple playlists, just like on the larger iPods.

In my tests, I managed to squeeze in more than the 1,000 songs Apple claims. I filled my test Shuffle with nearly 1,100 songs, plus a half dozen podcasts and an abridged audio-book edition of President Obama’s “The Audacity of Hope,” read by the author. My music was organized into about 15 playlists, and I was able to switch among them easily using the voice system.

To pause or resume a song, you click the large center portion of the earbud controller once, quickly. To skip to the next song, you click the same button twice, quickly. To change to the previous song, you click it three times quickly.

If you want the computerized “announcer” to identify the song, you press the center button for a longer time, and you keep holding it to start the playlist roll call. When you hear a playlist you want, you press the button again. Smaller buttons at the top and bottom of this earbud controller adjust the volume up and down. It sounds more complicated than it is. While the voice function is in use, the music keeps playing in the background, at reduced volume.

The computerized voice, available in multiple languages, is hardly perfect. Like all such computer voices, its cadence can sound robotic, and it clips some syllables, but I found it perfectly understandable.

The spoken names of your particular songs, artists and playlists are added when you sync the Shuffle with iTunes. The voice quality is best when using a Mac with the latest operating system. It is slightly cruder on Windows or older Mac operating systems.

Even on the latest Macs, the voice got some words wrong. For a live concert album, it pronounced the word “live” as “liv,” and in another case, it pronounced the Roman numeral “IV” as “eye-vee.”

There are some other downsides. The claimed battery life is just 10 hours, down from 12 on the prior Shuffle model. You can’t fully operate the Shuffle with regular earbuds or headphones that lack the special controller. And, if you have numerous playlists, it could be tedious waiting for the voice control to say all their names until it reaches the one you want.

Still, Apple has packed a lot of new intelligence into a truly tiny music player, at a pretty low price.

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

]]> http://ptech.allthingsd.com/20090311/the-littlest-ipod-packs-in-songs-and-finds-its-voice/feed/ 5 http://ptech.allthingsd.com/20090211/sonys-vaio-p-has-sportscar-looks-without-the-power/ http://ptech.allthingsd.com/20090211/sonys-vaio-p-has-sportscar-looks-without-the-power/#comments Thu, 12 Feb 2009 02:08:03 +0000 Walter S. Mossberg http://ptech.allthingsd.com/20090211/sonys-vaio-p-has-sportscar-looks-without-the-power/ Of the most famous computer makers, only two, Apple and Sony, primarily aim their products at consumers, instead of the generally conservative IT departments of big companies. So, it’s no surprise that these two tech giants often turn out especially stylish and daring hardware designs.

But Sony (SNE), unlike Apple (AAPL), isn’t especially skilled at software and doesn’t make its own operating system. This situation partly explains why Sony’s latest gorgeous, daring laptop, the shockingly tiny Vaio P, turns heads everywhere, but is pretty frustrating to use.

I love the look and feel and boldness of the design, but can’t recommend this sleek machine for most users because it is very slow and has poor battery life. Oh, and it sells for double or triple the price of other small laptops, commonly called netbooks.

The Vaio P is mainly undone because it comes with Vista Home Premium, the edition of Windows that is sluggish and a memory hog. Most competing small notebooks ship with the more nimble, but older, Windows XP. And the Vista problem is made worse by the processor inside the machine, which is an especially slow version of the Intel (INTC) Atom chip often used in netbooks.

While I was testing the Vaio P, which costs between $900 and $1,500, nearly everyone who saw it asked to try it. That’s because it doesn’t look like any other laptop I’ve seen. It’s long, narrow and very thin — with roughly the same footprint as one of those plastic folders waiters use to bring you the check at a restaurant. It can be tucked into the pocket of an overcoat or a pair of cargo pants, and comes in several handsome colors.

Sony’s Vaio P “lifestyle” computer

These unusual dimensions allow for only a small eight-inch screen, which is much wider than it is tall. But the Vaio P’s screen boasts very high resolution, so that it can display almost as much of a typical Web page or document as the more common 13.3-inch screens on larger laptops.

Sony also has done a great job with the keyboard on the Vaio P. Its keys are surprisingly large and well-spaced for such a tiny computer, with a wide space bar, and large “Enter” and “Backspace” keys. Instead of a touch pad, it uses a midkeyboard pointing stick.

And this little laptop is packed with nice features, including a built-in 3G cellular modem to supplement its Wi-Fi and free GPS for mapping. The P also comes standard with two gigabytes of memory. The $900 base model comes with a small 60-gigabyte hard disk; and the $1,200 midrange model has a 64-gigabyte solid state drive — which is more durable and uses less power. The top model, at $1,500, comes with a more reasonably sized 128-gigabyte solid state drive.

There are two USB ports, but the Ethernet and external video ports are relegated to a little module that snaps on to the power adapter. All models come with a quick-start system that brings up a stripped-down Web browser and media player without waiting for Windows to load. This is a boon, but it’s crudely designed.

Sony positions the Vaio P as a “lifestyle” computer, a companion to your main computer that’s almost as portable as a smart phone, but can do more. Unfortunately, once you actually start using it, that promise is dashed by its awful performance.

In my tests of the Vaio P, programs launched painfully slowly, delays were common and start-up and reboot times were glacial. I timed a reboot at nearly four minutes, and had to give up on an attempt to open 15 Web sites simultaneously in tabs in the usually speedy Firefox Web browser. Video playback was choppy.

There are some other problems that can’t be blamed on Vista. The speakers are worse than those on some cellphones. And the tiny mouse buttons are so close to the bottom edge of the keyboard that they are easy to hit accidentally. Also, I couldn’t get the GPS to work.

Using my tough battery test, in which I turn off all power-saving features, I got less than two hours, even on a solid-state model, suggesting a typical battery life of maybe 2.5 hours. Sony sells a double-sized battery, but it adds a bit of weight and bulk to the sleek box, and costs $129.

I also tested two experimental configurations of the Vaio P, which show that there’s hope for it in the future. One of these models had been tweaked by Sony to turn off many of Vista’s performance-sapping and power-hungry features. This box ran better, though still not great. Sony plans to offer a software download that will make these tweaks automatically.

Much better was a Vaio P with the forthcoming version of Windows, called Windows 7, installed. This version of Windows, likely to ship by this fall, made the Vaio P perform acceptably, despite its wimpy processor. Everything was much snappier, and reboot times were cut in half.

The Vaio P may be a beautiful device that’s just ahead of its time. Even if you can afford it, I’d advise waiting for the version with Windows 7.

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

]]> http://ptech.allthingsd.com/20090211/sonys-vaio-p-has-sportscar-looks-without-the-power/feed/ 0 http://ptech.allthingsd.com/20090114/shortcovers-iceberg-put-latest-e-books-on-your-cellphone/ http://ptech.allthingsd.com/20090114/shortcovers-iceberg-put-latest-e-books-on-your-cellphone/#comments Thu, 15 Jan 2009 02:04:07 +0000 Walter S. Mossberg http://ptech.allthingsd.com/20090114/shortcovers-iceberg-put-latest-e-books-on-your-cellphone/ Amazon’s Kindle e-book reader has been a solid success. The device can access a catalog of over 200,000 digital books, including most current best sellers, according to Amazon (AMZN). Its sharp screen, built-in downloading and long battery life have overcome a relatively high price and some poor hardware-design features.

However, most people aren’t likely to carry a Kindle everywhere — it’s too large to fit in a pocket and hogs space in a handbag. Yet they do tote their cellphones everywhere. So, for years, a dedicated minority of folks have been reading books on smart phones and other pocket devices with relatively large screens.

In recent months, e-book offerings have especially exploded on the Apple (AAPL) iPhone and iPod Touch, which, like the Kindle, have excellent screens and an easy and well-organized system for directly downloading content. Apple’s App Store, which carries everything from games to business software, has hundreds of e-book offerings (in addition to the audio books available through the iTunes store).

Some of these e-book apps, or programs, constitute just a single book, while others are digital-reading portals that can access anywhere from a handful of e-book titles, like the collected works of Shakespeare or the Sherlock Holmes tales, to many thousands of titles.

Two of the most popular e-book apps for the iPhone and the Touch are Stanza and eReader. They are pretty basic and straightforward, with little in the way of fancy formatting. But they get the job done, allowing you to download tens of thousands of titles from a variety of sources.

But, as with past cellphone or PDA e-book systems, most of those on the iPhone and Touch focus primarily on older, classic, or out-of-copyright titles, rather than on the sort of current, in-demand titles available on the Kindle. Some fresher titles are available, but the selection of popular books is relatively thin.

Now, two companies are launching new e-book apps that aim to bring current and popular titles from major publishers to the iPhone and Touch. And they add interesting features, including fancy formatting and community tools. I’ve been testing both.

One, called Shortcovers, is from the large Canadian bookseller Indigo Books & Music. Due to show up in the App Store in the next few weeks, Shortcovers is a portal to sampling, buying and reading books, and will have a companion Web site. It will allow readers to get free samples of blogs, magazines and books — say, the first chapter — and then buy either the entire work or other individual chapters or sections, which the company calls “shortcovers.”

The second, called Iceberg, is from an iPhone application developer called ScrollMotion. Already available, Iceberg offers each book packaged as an individual stand-alone app, with rich navigation features.

I found that reading books from these two services was OK, but not nearly as satisfying as reading them on a dedicated, large-screen device like the Kindle, which also offers free excerpts. But it was more convenient. I was able to knock off a chapter or a few pages while commuting or waiting in line. The apps use the iPhone’s touch features to allow you to navigate.

Shortcovers is the more ambitious and creative of the two. At launch, it expects to have 200,000 shortcovers — chapters or other free excerpts — available. About 50,000 of these also will be available for purchase as full digital titles; the rest can be ordered as physical books. Of the digital titles, roughly 15,000 to 20,000 will be older or public-domain books, and the rest commercial books. Typical book prices will be between $10 and $20. If you want to buy paid shortcovers — say a chapter of a business or travel book — the typical price will be 99 cents.

The key aim of Shortcovers is to get people to discover new works. So it emphasizes community features such as rating, tagging and sharing. It even allows people to make “mixes” of their favorite works and to upload their own writing. The Shortcovers catalog is a riotous mix of classics like “The Three Musketeers,” current titles like Malcolm Gladwell’s “Outliers,” and blog posts and magazine articles.

Iceberg’s claim to fame is its handsome appearance. It has just 14 titles available now, including the “Eragon” fantasy trilogy, and each must be downloaded as a separate app, which risks cluttering your iPhone with icons. The company is promising thousands of titles eventually, and has signed deals with major publishers. Prices hover around $10 or $11, but range to $27.

Books by Iceberg try to preserve the formatting and pagination of the printed title, and stress easy skimming to any page, searching and annotating. Pages are tinted and flip with a visual effect that apes a physical page-turn.

But there are missing features in both. Iceberg doesn’t allow bookmarking and Shortcovers lacks annotation. Neither app allows highlighting, or looking up words.

The iPhone isn’t primarily an e-book reader, and these new apps still can’t match Kindle’s full catalog. But they add yet another dimension to a very versatile gadget.

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

]]> http://ptech.allthingsd.com/20090114/shortcovers-iceberg-put-latest-e-books-on-your-cellphone/feed/ 0 http://ptech.allthingsd.com/20081105/netbooks-come-into-their-own/ http://ptech.allthingsd.com/20081105/netbooks-come-into-their-own/#comments Thu, 06 Nov 2008 02:10:04 +0000 Walter S. Mossberg http://ptech.allthingsd.com/20081105/netbooks-come-into-their-own/ Somewhere between the laptop and the smart phone, the computer industry has long believed there could be a small, low-cost device that would please consumers and sell well.

The device would be more versatile than, say, an iPhone, but much cheaper and more portable than, say, a ThinkPad. The trouble is, every attempt to create such a category of computer has met with failure — until now.

This year, that in-between type of computer now called a “netbook” has finally caught on. Since I reviewed a pioneering model, the 7-inch, $300 Asus Eee PC back in January, the market has been flooded with new and better, if somewhat more expensive, netbook models. Nearly every company — from big names such as Dell and Hewlett-Packard, to obscure ones like MSI — has jumped into the fray.

Netbooks still constitute a smaller niche than laptops and the exploding smart phone, or hand-held computer, category. But they are threatening to break into the mainstream in a big way, especially in an economic climate where a low price and fewer bells and whistles are suddenly more attractive.

They are much more portable than most standard laptops. They are easier to use on a plane or carry around town. And they are way cheaper, between $300 and $500, than the very lightest, thinnest standard laptops, which often top $1,000.

Compared with even an amazingly powerful pocket device, like the iPhone, the Google (GOOG) G1, or the forthcoming BlackBerry Storm, a netbook, at about twice the price, offers a much larger keyboard and screen. And they can run far more sophisticated software and perform a much wider variety of computing tasks.

But netbooks come with serious compromises. While they are great for light use on the go, their cramped screens and keyboards, and slow processors, make them much less potent and less comfortable to use than even a so-called ultraportable laptop. And, as small as they are, they can’t fit in a pocket like smart phones can, be as easily used as a still camera, or function as a cellphone.

Netbooks aren’t tablets. They look and act like regular clamshell-style laptops with keyboards and track pads, but are much smaller. Most current models have 8.9-inch screens, though some now sport 10-inch displays. Dell (DELL) is even planning soon to launch a netbook with a 12-inch screen for around $600, which will blur the line with traditional laptops, some of which can be bought for less with larger displays.

Compared with sleek, thin, but much costlier notebooks, such as the Apple (AAPL) MacBook Air or the Lenovo ThinkPad X300, the netbooks of today are stubbier and chunkier. But they take up much less room on an airline tray table. When the person in front of you reclines, you can happily keep using them, because their screens are so much smaller and extend upward so much less.

The early netbook models relied on the unfamiliar and somewhat geeky Linux operating system, and most still offer it as an option. But many now also can be purchased with Windows XP, with which consumers are far more experienced, and which can run many more well-known programs.

At the start of this year, most netbooks lacked hard disks, instead offering very limited storage via memory chips — often less storage than a $199 iPhone. They were pitched as limited devices mainly meant for using the Internet — thus the name “netbook” — and their makers assumed users mainly would use Web-based applications.

Now, many offer decent-size hard disks and include serious programs, such as Microsoft (MSFT) Office or Microsoft Works. But none offers a built-in DVD drive, which makes it hard to install some new software.

To offer readers a feel for today’s netbooks, I selected four representative models to test and review. I am not declaring these four as the best on the market, nor do I mean to slight makers like H-P, whose entries aren’t included in this review. The truth is, there are far more similarities than differences among competing netbooks that might make one model stand out from the others.

All four of the models I tested use Intel’s new low-power Atom processor. All have decent screen resolution — much better than the original Asus. But none can display a full Web page, or even most of a Web page, without scrolling. Each has three USB ports.

Three of the four have good battery life, but getting good power in most models means using a larger battery that adds weight and bulk.

All of my test models ran XP, not Linux, because I believe that’s the better choice for average consumers.

Here are minireviews of these four netbooks.

Acer Aspire One: The $349 blue Acer One weighs a little over two pounds with its standard battery, and has a bright, sharp 8.9-inch screen. It comes with a 120-gigabyte hard disk and 1 gigabyte of memory. It’s a little over an inch thick, and its footprint is much smaller than that of a standard sheet of paper.

As on all the other models, I tried a word processor, either Microsoft Word or Works, and several popular non-Microsoft programs: Adobe Reader, Apple’s iTunes and Mozilla’s Firefox browser. The Acer handled all of them well, though, as with all the other netbooks I tried, its speakers are mediocre.

The Acer’s small keyboard is very nicely done. Its keys are large enough, and separated and sculpted enough, to make typing comfortable and accurate, though I wouldn’t want to write a novel on it.

But the Acer has two big drawbacks. Its battery life is miserable. On my tough battery test, where I turn off all power-saving features, crank up the screen brightness, turn on the Wi-Fi, and play a continuous loop of music, it couldn’t even squeeze out two hours. In normal use, that might mean 2½ hours. To fix that problem, you can spend $50 more on a version with a double-size battery, at the cost of added weight and bulk. This costlier version also boosts the hard disk to 160 gigabytes.

The other problem, which can’t be fixed with any factory options, is that the Acer One has a terrible track pad. It’s too cramped vertically for comfortable use, and the buttons, which are mere slivers, are arranged on the sides instead of below the pad. Moving the cursor or selecting text is awkward and inaccurate.

Lesser problems are that the Acer includes only the older, slower, “G” flavor of Wi-Fi and a low-resolution Webcam.

The Dell Mini 9 has an 8.9-inch screen, is compact and has a big battery, but it lacks a hard disk and offers just 8 gigabytes of flash memory.

Dell Mini 9: Like the less costly Acer, the $399 Dell Mini has an 8.9-inch screen, but it’s a bit narrower horizontally. Its standard battery is larger, making it slightly heavier but still very light.

The Dell is a throwback to the older concept of netbooks. It lacks a hard disk and offers just 8 gigabytes of flash memory, plus 2 gigabytes of free online storage. It has just half a gigabyte of memory. For extra money, you can double the flash storage and memory.

Because of its bigger battery, and its lack of a power-sucking hard disk, the Dell beat the Acer handily in my battery test, getting just under three hours, which means that, in normal use, you would likely see four hours.

The Dell has the same wimpy Wi-Fi and Webcam as the Acer. But its track pad, while small, is much larger vertically and easier to use, with buttons where you expect to find them. It ran all my test software OK.

However, the Dell had by far the worst keyboard in my test group. Because of its compact width, the tab, arrow and other keys are squeezed to a ridiculously narrow size that impedes typing.

MSI Wind U100: This is a $399 machine (after a recent price cut) with a 10-inch screen, and comes from a Taiwan company better known in the U.S. for making computer components than entire computers. The model I tested, with a double-size battery, is $429. My test unit was white, weighed a tad over three pounds, and had 1 gigabyte of memory and a 160-gigabyte hard disk.

Despite the larger screen, the Wind still fits very well on a cramped airline tray, and it has a well-designed keyboard. It comes with a button that can slow down or speed up the processor to save battery life or add oomph. And there’s a function that can magnify portions of text.

It has a standard, decent Webcam and can use the newest “N” flavor of Wi-Fi. It ran all my test software just fine.

With my test model’s bigger battery, which protrudes from the bottom, the Wind did very well on my test at its standard processor speed, lasting three hours and 37 minutes. That suggests you could get four to five hours in normal use. Presumably, the standard model with the smaller battery would get half of that life, though you could stretch it by stepping down the processor speed.

Overall, I liked the MSI Wind a lot. My only real gripe is that the track pad is small and has only a single thin button, which performs a left or right click. This button is too small and sluggish for optimal use.

Asus Eee 1000H: Asus, another Taiwan company known as a component maker, is the king of netbooks. In fact, it has so many different, and frequently changing, netbook models that its product lineup can be a blur. The one I tested has a 10-inch screen and costs $475, making it the costliest netbook in this group. It’s also the heaviest, edging out my test Wind slightly.

Like the Wind, my Eee 1000H had a large battery that protruded from the bottom. It doesn’t come with a smaller battery. Also like the Wind, it has a standard Webcam, the faster “N” Wi-Fi, and a 160-gigabyte hard disk with 1 gigabyte of memory.

The keyboard on the 1000H was the best of this lot, with well-designed keys. It also had the roomiest and most functional track pad, though its buttons — integrated with a metal border around the track pad — took some getting used to.

The Asus, like the Wind, has the capability to tweak the speed of its processor. It also has a button that can change the screen resolution, though I found that the nonstandard resolutions looked distorted.

In my battery test, at its standard processor speed, the 1000H got three hours and 32 minutes, suggesting that in normal use it could deliver between four and five hours — more if you use the lower processor speed.

The Asus handled all my test software well. It comes with a greater variety of built-in programs than the others and offers 20 gigabytes of free online storage.

Bottom line: If you want a machine for light use, a light price and a light weight, a netbook is waiting and is worth a try. Just don’t expect the same experience as on a standard laptop or the convenience of a smart phone.

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

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