The Palm Centro's full QWERTY keyboard makes it easy to type text messages, IMs, and e-mails.

AT&T Service
This phone operates on GSM 850/900/1800/1900 networks and can handle high-speed data connectivity via AT&T's EDGE network (which stands for "Enhanced Data Rates for Global Evolution"), with availability in more than 13,000 US cities and along some 40,000 miles of major highways. This third-generation, high-speed, mobile data and Internet access technology is fast enough to support a wide range of advanced data services (with average data speeds between 75-135Kbps), including video and music clips, full picture and video messaging, high-speed color Internet access, and email on the go.

The phone has a built-in web browser for MEdia Net downloads and mobile web browsing. AT&T's MEdia Net service enables you to receive and send emails, read news headlines, get weather updates, download games and ringtones, and more. The AT&T Mobile Music platform includes the ability to sideload music with Napster and eMusic with the built-in Pocket Tunes Deluxe application, listen to live radio with XM Radio Mobile, discover new songs with MusicID and more. You can also access XM Radio Mobile, which provides 25 of the best XM Radio channels, featuring commercial-free rock, hip-hop, country, jazz and more (additional monthly fee; free three-day trial included).

With a database of more than 3 million artists and titles, you can use MusicID to identify an unknown song. While holding the Centro up to a speaker, the MusicID application returns song information such as title, artist and cover art, if available. It also keeps track of previous IDs and allows users to share song information with friends via text messages (additional monthly fee; free three-day trial included).

It's also MobiTV capable, which enables you to watch live television, premium and prime-time programming, video-on-demand clips and satellite and digital music services from the top broadcast and cable television networks and major music labels (additional monthly charges are applicable).

You can take advantage of the TeleNav GPS Navigator software, the full-featured premium navigation application that includes audible turn-by-turn directions, real-time traffic updates and re-routing options, and 3D moving maps. It comes as a 30-day trial version, and it can be downloaded via the TeleNav web site or via virtual pre-load icon (VPL) after activation.

You can also instantly talk across the largest Push to Talk (PTT) network coverage area in America. Push to Talk works like a walkie-talkie to talk to an individual or a group of up to 29 users. With status icons that clearly indicate the availability of friends and family, Push to Talk customers will know who is free before they call. You can purchase unlimited Push to Talk minutes with with single or family plans, or use Push to Talk on a pay-per-use basis that's charged by the minute.

Design
The Palm Centro boasts a sleek glacier white housing that measures a mere 4.2 by 2.1 by 0.7 inches (HxWxD) and weighs 4.2 ounces. It's notably smaller than many competing smartphones, yet doesn't sacrifice functionality at any point along the way. Users will also love the 320 x 320 touchscreen (up to 65,000 colors), which offers a crisp resolution for photos and videos. And thanks to the full QWERTY keyboard, you can say L8R to those tricky keys on your old cell phone.

Phone and Messaging Functions
The Palm Centro smartphones offers a ton of ways to stay in touch with friends, whether calling, firing off a quick text, instant messaging, or sending an e-mail. From a phone perspective, the Palm Centro lets you dial people right from your address book, set up three-way calls from the touch of a button, or use the speakerphone to talk hands-free. The keyboard, meanwhile, makes it a breeze to type complete messages whether you're sending text, pictures, or even audio or video clips. Plus, the Centro keeps all your messages in a chat-style view, so it's easy to keep track of the conversation.

Want to keep up with all the latest gossip when you're away from the computer? Turn to the Centro's instant messaging functions, which support all your buddy lists on AIM, MSN, and Yahoo. It also supports Good Mobile Messaging after an over-the-air (OTA) download of the software.. Similarly, the Centro lets you access your personal e-mail accounts, such as Gmail, AOL, and Yahoo. As a result, you can reply to invites and answer e-mails when you're out and about.

Web Functions
Whether you're keeping up with friends on Facebook or looking up directions to the new bistro across town, the Centro's touchscreen and keyboard make it fun to navigate around the web. The Centro includes a fast built-in web browser that lets you check out photos on Flickr quickly via AT&T's EDGE data network. The Centro is also compatible with Google Maps, making it simple to get directions or see which freeways are clear and which ones are parking lots. Google Maps shows you red, yellow, or green traffic routes in real time.

Organizer Functions
The Palm Centro includes a complete organizer for keeping track of all your daily, weekly, and monthly responsibilities. The contacts list gathers all your friends' phone numbers, addresses, and more, while the calendar keeps you from missing upcoming meetings, events, and parties. You can even enter a friend's birthday in the contacts list and will automatically show up in your calendar. As with the best organizers, the Centro also offers a to-do list that lets you check off items when they're complete. As a result, it's easy to keep track of what you did and still need to do. And should you come across a tidbit that doesn't have a logical home, simply turn to the memo function, which lets you store random information such as hot spots in Vegas or the names of movies you'd like to rent. Say goodbye to carrying around crumpled scraps of paper in your pocket or purse. Finally, it's possible to save a copy of all those names, numbers, appointments, photos, and videos on your computer thanks to the sync function.

Multimedia
Whether you want to take pictures, play videos, or listen to music, the Palm Centro has got you covered. The 1.3-megapixel digital camera (with a 2x digital zoom) lets you shoot pictures and send them to friends, store digital albums, or shoot videos. The built-in MP3 player, meanwhile, lets you take your tunes everywhere you go. With 64 MB of storage, there's plenty of room for your playlists, plus you can add up to 4 GB more with a microSD card. And thanks to Pocket Tunes Deluxe, you can play the songs you downloaded from online music stores.

Vital Statistics
The Palm Centro weighs 4.2 ounces and measures 4.2 x 2.1 x 0.7 inches. Its 1150 mAh lithium-ion battery is rated at up to 3 hours of talk time, and up to 240 hours of digital standby time. It runs on the 850/900/1800/1900 GSM/GPRS/EDGE frequencies.