Many of the new phones being offered by the big carriers are being advertised as being “3G” ready. The average mobile phone consumer often will not know what 3G is or why it’s important to them. To be a better informed consumer lets investigate exactly what 3G is.
What Is It?
3G stands for Third Generation and refers to the third generation of technology in the mobile industry. 3G follows 1G and 2G technology.
1G
The first real cell phones are considered to be 1G (First Generation). The networks for these early cell phones used analog signals. The phones used on the networks were big and clunky, with no abilities aside from voice.
2G
The technology categorized as 1G was in place up until the early 1990′s, when it was then replaced by the 2G technology features. With 2G came a break away from the analog signals and a move towards the digital spectrum. 2G brought with it the introduction to providing multimedia content and increased bandwidth. A lot of the technologies classified as 2G are still being used in cell phones today.
2.5G
Before the complete rollout of 3G technologies, 2.5G was introduced. Primarily used as a marketing term, 2.5G is not an officially recognized technology; but it can be used to refer to the “in between” stage of moving away from 2G and moving completely into the 3G realm. 2.5G uses the existing 2G infrastructure while enabling some of the benefits of the 3G technologies, including increased multimedia abilities and improved data transfer speeds.
3G
The technologies that now qualify as 3G include increased functionality of mobile phones; with increased speeds and bandwidth being the biggest appealing factors. Multimedia functionality on the networks also improves, by leaps and bounds, with the move to 3G technologies.
While 3G capable phones are incredibly appealing to cell phone buyers they may find that not all of the functionality their phones are capable of available to them. Carriers in the US have yet to fully roll out their 3G networks in all markets. AT&T is leading the market right now, with their 3G networks being available in most major metropolitan markets; however the biggest AT&T seller, the iPhone, is not 3G capable. Apple has stated that a 3G version might be possible in the future when 3G is more widely available in the US.
T-Mobile is trailing behind AT&T when it comes to their 3G network. Until recently, none of the 3G capable phones T-Mobile sold could have their full functionality used; simply because the 3G infrastructure is not yet fully in place across the T-Mobile markets. T-Mobile has recently launched their 3G network in New York, allowing New York customers the ability to take advantage of the full functionality of their 3G capable phones.
3G will, soon, become the standard technology in the mobile industry; it is just up to the wireless carriers to ensure that they quickly meet the demands of their users who want to take advantage of the 3G technologies as soon as possible.
Archive for December, 2010
3G Cell Phones Explained
Sunday, December 26th, 2010Used Cell Phones: GSM Versus CDMA
Sunday, December 19th, 2010Finding a cellular phone and carrier that fits your needs is never easy. There are some basic things you have to know about your phone and cellular carrier like coverage areas, data availability, data transfer speed, roaming etc.. One of the most important things you should look for in a cellular carrier before you chose one is what network technology they use.
Most cellular carriers In the U.S. (T-Mobile, Sprint, Verizon, AT&T and others) use either CDMA, or GSM and sometimes both. What do GSM and CDMA mean, and which one is better for your needs? let’s first understand the meaning and the differences between the two.
CDMA stands for Code Division Multiple Access. Using codes, in CDMA the data and voice are separated from signals – leaving more space for data transfers. That is why CDMA is favored by 3G users – as they send and receive multimedia messages or using wireless broadband to access the internet. CDMA technology uses wide frequency-range to transmit voice and data.
GSM or Global System Mobile (or Group Special Mobile) is the most widely used network technology around the world – dominating as much as 80% of the worldwide cellular networks market, and even greater percentage of the market in Europe. With GSM, roaming between CSPs (Carrier Service Providers) is more common than with CDMA – which is why GSM users can use their mobile devices in almost every part of the world. GSM is categorized as a second generation cellular system because the speech channel is digital (analog audio signals are converted into digital signals), as well as the signaling.
Here are some factors you might want to check before choosing one over the other:
SIM Card: GSM SIM (Subscriber Identity Module) Card is a memory card that identify the user and saves his information, phone book, calender entries and more. SIM Cards can be taken out of one device and put into another very easily, so that your info, data and calling plan can be carried into a new handset within a minute. That’s one of the major reasons for people preferring GSM SIM cellular phones over CDMA phones. On the other hand, most CDMA CSPs have a database (on the CSPs computers) that stores your data, and transfers it to a new device upon your request – easily. That gives CDMA carriers an advantage: user’s info and phone-book recovery in case the phone is lost or stolen.
Domestic / International Usage: if you’re a business man going on a business trip abroad every once in a while, or just travel a lot, GSM is right for you. With GSM being used by almost 80% of cellular phone users around the world, it is considered more accessible than CDMA. you’d be able to use your quad-band GSM phone all over Europe and in most parts of Asia, while multi-band is not available with CDMA – which reduces the use of CDMA overseas.
There are more differences between the two, of course, but these few are the most significant and affect the user the most. Make sure you do your research before choosing your cellular service provider, and remember to ask what network technology they use.
Xintai N9 three sim cards NES game cell phone—–CDMA network cellphone
Sunday, December 12th, 2010
What Is CDMA?
CDMA is an acronym for Code Division Multiple Access; it is a digital technology that uses what is known as “spread spectrum techniques.” This means that the transmitted signal frequency varies deliberately. Allowing the signal to vary gives an output of more bandwidth than would be allowed if the frequency was not varied. CDMA has long been the standard used in the USA and has been known for its ability to provide better voice and data services than other cellular technologies on the market. Verizon and Sprint use CDMA technology.
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