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(1) (3rd Generation) The third version of a product or system. See iPhone 3G.

(2) (3rd Generation) The current generation of cellular transmission, which primarily features higher speeds for Internet access and real-time video. In the U.S., the major 3G technologies are EV-DO for CDMA networks, such as used by Verizon and Sprint, and HSDPA for GSM networks for carriers such as AT&T and T-Mobile. For example, the iPhone 3G, Apple's second generation iPhone, uses HSDPA, a 3G technology. For more details, see cellular generations and iPhone.




It Makes a Difference
These two speed tests on the iPhone were taken in the same location by switching between AT&T's earlier and slower EDGE (E) system and its subsequent faster 3G channel. Although speed varies based on how many users are online, this 3G example was nearly 11 times faster than EDGE that particular day on the beach in Fort Lauderdale, Florida.