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Basic Cell Phone Acronyms You Need to Know

Confused by the alphabet soup of cell phone acronyms? I don't blame you. Here's a cheat sheet that'll help you navigate the waters while your shopping for your next phone—or trying to get the most out of the handset you've got.
Most of the confusion arises when it comes to the various types of cell phone networks. For example, when I ask my aunts and uncles which networks their phones work on, they'll usually tell me their carrier instead of whether they're using GSM or CDMA—and frankly, before I started writing about cell phones for a living, I didn't know the difference, either. So first, let's start with a quick overview of the two main standard for cell networks:

* GSM: Short for Global System for Mobile Communications, GSM is the most widespread standard for cell phones networks in the world. If you're a jetsetter who likes keeping in touch during your far-flung travels, you should go with a GSM-enabled phone, and here in the U.S., AT&T and T-Mobile are both GSM carriers. Besides the technical differences between CDMA and GSM networks (I'll spare you the details), the main distinction of a GSM phone is that it comes with a SIM (Subscriber Identity Module) card—a little plastic chip that, as its name implies, identifies your phone on the GSM network. If you take the SIM card out of your GSM phone and put it into another GSM handset, you'll be able to place and receive calls on the second phone using your own cell phone number. GSM phones are also capable of handling six-way conference calls.
* CDMA: Short for Code Division Multiple Access, CDMA networks are much more prevalent in the U.S. than they are abroad, and while CDMA boasts many of the same features as GSM networks (including caller ID, call waiting, and text messaging), there are some key differences—namely, CDMA phones don't use SIM cards. Instead, your phone's identity and number are programmed into the handset by your carrier, and you can't easily switch numbers on CDMA phones as you can with SIM-equipped GSM phones. Also, CDMA phones can only handle three-way conference calls, versus six-way calls on GSM networks. Major CDMA carriers in the U.S. include Sprint, Verizon Wireless, and regional operator Alltel.

OK, so you've got your two main flavors of networks, but now I'm going to stir another variable into the mix: 3G. Here's the deal: GSM and CDMA are both considered second-generation, or 2G, networks (the first generation being AMPS, an analog network used mainly back in the 1980s). Unlike the old voice-only AMPS networks, digital GSM and CDMA networks can handle both voice and data calls, which means you can send text messages, surf the Web and get caller ID info. But data flows slowly over GSM and CDMA—think dial-up, only slower. Streaming video and music? Forget it.

That's where 3G, or third-generation networks, come in. These so-called 3G systems allow data to flow at speeds you'd expect from a home DSL modem or better—and at those speeds, you get features like streaming video and full-track music downloads. The main types of 3G networks include:

* EV-DO: An add-on for CDMA networks, EV-DO (or Evolution-Data Optimized) delivers data speeds between 144Kbps to 2Mbps to CDMA cell phones, perfect for streaming video and music. Sprint offers EV-DO access through its Power Vision phones (which are typically a little pricier than standard models); on Verizon Wireless, look for the "V Cast" label.
* UMTS and HSDPA: Both UMTS (Universal Mobile Telecommunications System) and HSDPA (High-Speed Downlink Packet Access) are upgrades to GSM networks, and like EV-DO, they provide DSL and cable-like data speed. The only difference between UMTS and HSDPA (besides the technical nitty-gritty, of course) is that HSDPA is even faster than UMTS; for that reason, HSDPA networks are often called 3.5G rather than just 3G. In the U.S., only AT&T offers UMTS and HSDPA networks. (T-Mobile is busy working on its own HSDPA network, which should begin going online by the end of the year.)


Somewhere between 3G and 2G lies, naturally enough, 2.5G networks, which give you data speeds that are slightly faster than dial-up—no good for streaming video, but fine for messaging or mobile Web browsing. These networks include:

* 1xRTT: A variant of the CDMA standard, 1xRTT (or "1 times Radio Transmission Technology") gives you data speeds between 30Kbps and 90Kbps, a bit better than your typical 56Kbps dial-up modem. Most of the non-3G phones on Sprint and Verizon have 1xRTT capabilities.
* GPRS and EDGE: The 2.5G flavors of GSM networks, GPRS (General Packet Radio Service) and EDGE (Enhanced Data Rates for GSM Evolution) also give you data in the 30Kbps to 90Kbps range, with EDGE running slightly faster than GPRS. Again, most of the non-3G phones on AT&T offer either GPRS or EDGE, while T-Mobile—which has yet to launch a 3G network—only does GPRS and EDGE.


Whew! That's a lot of terminology, I know—and believe it or not, I've barely scratched the surface. I'll tackle more wireless acronyms in future posts; in the meantime, if you're curious about the technical details of the various cell networks, I'd suggest combing through Wikipedia, or check out Phonescoop's exhaustive glossary.

Basic Cell Phone Acronyms You Need to Know

Basic Cell Phone Acronyms You Need to Know

Confused by the alphabet soup of cell phone acronyms? I don't blame you. Here's a cheat sheet that'll help you navigate the waters while your shopping for your next phone—or trying to get the most out of the handset you've got.
Most of the confusion arises when it comes to the various types of cell phone networks. For example, when I ask my aunts and uncles which networks their phones work on, they'll usually tell me their carrier instead of whether they're using GSM or CDMA—and frankly, before I started writing about cell phones for a living, I didn't know the difference, either. So first, let's start with a quick overview of the two main standard for cell networks:

* GSM: Short for Global System for Mobile Communications, GSM is the most widespread standard for cell phones networks in the world. If you're a jetsetter who likes keeping in touch during your far-flung travels, you should go with a GSM-enabled phone, and here in the U.S., AT&T and T-Mobile are both GSM carriers. Besides the technical differences between CDMA and GSM networks (I'll spare you the details), the main distinction of a GSM phone is that it comes with a SIM (Subscriber Identity Module) card—a little plastic chip that, as its name implies, identifies your phone on the GSM network. If you take the SIM card out of your GSM phone and put it into another GSM handset, you'll be able to place and receive calls on the second phone using your own cell phone number. GSM phones are also capable of handling six-way conference calls.
* CDMA: Short for Code Division Multiple Access, CDMA networks are much more prevalent in the U.S. than they are abroad, and while CDMA boasts many of the same features as GSM networks (including caller ID, call waiting, and text messaging), there are some key differences—namely, CDMA phones don't use SIM cards. Instead, your phone's identity and number are programmed into the handset by your carrier, and you can't easily switch numbers on CDMA phones as you can with SIM-equipped GSM phones. Also, CDMA phones can only handle three-way conference calls, versus six-way calls on GSM networks. Major CDMA carriers in the U.S. include Sprint, Verizon Wireless, and regional operator Alltel.

OK, so you've got your two main flavors of networks, but now I'm going to stir another variable into the mix: 3G. Here's the deal: GSM and CDMA are both considered second-generation, or 2G, networks (the first generation being AMPS, an analog network used mainly back in the 1980s). Unlike the old voice-only AMPS networks, digital GSM and CDMA networks can handle both voice and data calls, which means you can send text messages, surf the Web and get caller ID info. But data flows slowly over GSM and CDMA—think dial-up, only slower. Streaming video and music? Forget it.

That's where 3G, or third-generation networks, come in. These so-called 3G systems allow data to flow at speeds you'd expect from a home DSL modem or better—and at those speeds, you get features like streaming video and full-track music downloads. The main types of 3G networks include:

* EV-DO: An add-on for CDMA networks, EV-DO (or Evolution-Data Optimized) delivers data speeds between 144Kbps to 2Mbps to CDMA cell phones, perfect for streaming video and music. Sprint offers EV-DO access through its Power Vision phones (which are typically a little pricier than standard models); on Verizon Wireless, look for the "V Cast" label.
* UMTS and HSDPA: Both UMTS (Universal Mobile Telecommunications System) and HSDPA (High-Speed Downlink Packet Access) are upgrades to GSM networks, and like EV-DO, they provide DSL and cable-like data speed. The only difference between UMTS and HSDPA (besides the technical nitty-gritty, of course) is that HSDPA is even faster than UMTS; for that reason, HSDPA networks are often called 3.5G rather than just 3G. In the U.S., only AT&T offers UMTS and HSDPA networks. (T-Mobile is busy working on its own HSDPA network, which should begin going online by the end of the year.)


Somewhere between 3G and 2G lies, naturally enough, 2.5G networks, which give you data speeds that are slightly faster than dial-up—no good for streaming video, but fine for messaging or mobile Web browsing. These networks include:

* 1xRTT: A variant of the CDMA standard, 1xRTT (or "1 times Radio Transmission Technology") gives you data speeds between 30Kbps and 90Kbps, a bit better than your typical 56Kbps dial-up modem. Most of the non-3G phones on Sprint and Verizon have 1xRTT capabilities.
* GPRS and EDGE: The 2.5G flavors of GSM networks, GPRS (General Packet Radio Service) and EDGE (Enhanced Data Rates for GSM Evolution) also give you data in the 30Kbps to 90Kbps range, with EDGE running slightly faster than GPRS. Again, most of the non-3G phones on AT&T offer either GPRS or EDGE, while T-Mobile—which has yet to launch a 3G network—only does GPRS and EDGE.


Whew! That's a lot of terminology, I know—and believe it or not, I've barely scratched the surface. I'll tackle more wireless acronyms in future posts; in the meantime, if you're curious about the technical details of the various cell networks, I'd suggest combing through Wikipedia, or check out Phonescoop's exhaustive glossary.

Basic Cell Phone Acronyms You Need to Know

Samsung's 3G Instinct takes on the iPhone

LAS VEGAS - With its sleek design, flashy menus, haptic feedback, and full-on 3G access, this touchscreen delight for Sprint users looks to be one of the strongest iPhone competitors to date. Read on for my hands-on impressions.

Announced Tuesday here at CTIA, the Instinct (set for release in mid-June) looks like a virtual clone of the iPhone, but it delivers many of the features missing from Apple's red-hot handset, including 3G access for speedy browsing and downloads, a replaceable battery, expandable memory, and haptic feedback for the touchscreen - that is, a slight vibration each time you tap the screen. This key feature is sorely missing on the iPhone.

I got an early, hands-on look at the Instinct a couple of weeks ago in New York, and I have to say, it's the most impressive iPhone contender I've seen yet-or at least until I try out LG's touchscreen Vu, which is also set to debut here at CTIA.

The Instinct certainly scores in the looks department, with its smooth, jet-black face (à la the iPhone) and 3-inch display, along with three keys-Back, Home, and Call-just beneath.

Measuring 4.6" by 2.2" by 0.49", the Instinct is a tad narrower but a bit thicker than the iPhone, and it's also a bit lighter, weighing in at 4.4 ounces.

The Instinct's sleek, animated touch interface lookspromising, if still a bit rough-and-ready. The unit I tried was still in the testing stage, so I'll hold off on direct iPhone comparisons until I've seen a final device.

Still, a lot of the UI innovations that I love on the iPhone are right here. Navigating on the touchscreen was a pleasure, and I liked the roulette wheel-like scrolling through long lists of items.

Another ace up the Instinct's sleeve is its access to Sprint's 3G "EV-DO Rev. A" data network, which means speedy Web surfing, full-track downloads from the Sprint Music Store (which got a badly needed makeover for the Instinct), video clips from Sprint TV, and the ability to tether the phone to your laptop for on-the-road Net access.

More good stuff: GPS navigation combined with voice commands, allowing you to bark "Go pizza" to the Instinct and get turn-by-turn directions to the nearest slice.

And here's a feature that travelers will love: the Instinct's removable battery, good for swapping out during, say, coast-to-coast flights. The iPhone's battery is-as many have groused about before-sealed in its shell, meaning that if it runs out of juice and you're nowhere near an AC outlet, you're out of luck.

Rounding out the Instinct's features are microSD memory expansion (up to 8GB), a 2MP camera, stereo Bluetooth, and a media manager for sideloading music and videos.

Good stuff, although I should point out that the Instinct's Web browser (or at least the version I saw) looked pretty clunky compared to the iPhone's, and the Instinct's POP/IMAP/Outlook Web access messaging won't be able to match the iPhone's upcoming support for Microsoft Exchange servers. There's also the iPhone's potential as a software platform to consider, now that the iPhone SDK is out in the wild.

And of course, by the time the Instinct arrives in Sprint stores (sometime in mid-June), we may well have a new 3G iPhone on our hands.

No definitive word on pricing for the Instinct quite yet, although I'm told it could be in the $200-250 range.

So, what do you think? Do we have an iPhone killer in our midst?

http://tech.yahoo.com/blogs/patterson/14171

Samsung's 3G Instinct takes on the iPhone

Samsung's 3G Instinct takes on the iPhone

LAS VEGAS - With its sleek design, flashy menus, haptic feedback, and full-on 3G access, this touchscreen delight for Sprint users looks to be one of the strongest iPhone competitors to date. Read on for my hands-on impressions.

Announced Tuesday here at CTIA, the Instinct (set for release in mid-June) looks like a virtual clone of the iPhone, but it delivers many of the features missing from Apple's red-hot handset, including 3G access for speedy browsing and downloads, a replaceable battery, expandable memory, and haptic feedback for the touchscreen - that is, a slight vibration each time you tap the screen. This key feature is sorely missing on the iPhone.

I got an early, hands-on look at the Instinct a couple of weeks ago in New York, and I have to say, it's the most impressive iPhone contender I've seen yet-or at least until I try out LG's touchscreen Vu, which is also set to debut here at CTIA.

The Instinct certainly scores in the looks department, with its smooth, jet-black face (à la the iPhone) and 3-inch display, along with three keys-Back, Home, and Call-just beneath.

Measuring 4.6" by 2.2" by 0.49", the Instinct is a tad narrower but a bit thicker than the iPhone, and it's also a bit lighter, weighing in at 4.4 ounces.

The Instinct's sleek, animated touch interface lookspromising, if still a bit rough-and-ready. The unit I tried was still in the testing stage, so I'll hold off on direct iPhone comparisons until I've seen a final device.

Still, a lot of the UI innovations that I love on the iPhone are right here. Navigating on the touchscreen was a pleasure, and I liked the roulette wheel-like scrolling through long lists of items.

Another ace up the Instinct's sleeve is its access to Sprint's 3G "EV-DO Rev. A" data network, which means speedy Web surfing, full-track downloads from the Sprint Music Store (which got a badly needed makeover for the Instinct), video clips from Sprint TV, and the ability to tether the phone to your laptop for on-the-road Net access.

More good stuff: GPS navigation combined with voice commands, allowing you to bark "Go pizza" to the Instinct and get turn-by-turn directions to the nearest slice.

And here's a feature that travelers will love: the Instinct's removable battery, good for swapping out during, say, coast-to-coast flights. The iPhone's battery is-as many have groused about before-sealed in its shell, meaning that if it runs out of juice and you're nowhere near an AC outlet, you're out of luck.

Rounding out the Instinct's features are microSD memory expansion (up to 8GB), a 2MP camera, stereo Bluetooth, and a media manager for sideloading music and videos.

Good stuff, although I should point out that the Instinct's Web browser (or at least the version I saw) looked pretty clunky compared to the iPhone's, and the Instinct's POP/IMAP/Outlook Web access messaging won't be able to match the iPhone's upcoming support for Microsoft Exchange servers. There's also the iPhone's potential as a software platform to consider, now that the iPhone SDK is out in the wild.

And of course, by the time the Instinct arrives in Sprint stores (sometime in mid-June), we may well have a new 3G iPhone on our hands.

No definitive word on pricing for the Instinct quite yet, although I'm told it could be in the $200-250 range.

So, what do you think? Do we have an iPhone killer in our midst?

http://tech.yahoo.com/blogs/patterson/14171

Samsung's 3G Instinct takes on the iPhone