3G -- The new fastest packet data network. Verizon (which is why I like Verizon the most, in addition to it being my first carrier service) was the first to employ 3G technology in the states, long before AT&T, T-Mobile, or Sprint.
Their are two "flavors" of 3G packet data modes. They're both about the same speed, but they're just called different things depending on the carrier. Verizon and Sprint's 3G is called 1xEV-DO from CDMA technology and AT&T and T-mobile's version of 3G is UMTS and HSPDA from GSM technology.
- EV-DO:CDMA:Verizon and Sprint
- UMTS/HSPDA:GSM:AT&T and T-Mobile
Those are the main two 3g packet data protocols (EV-DO and UMTS/HSPDA). Hopefully, there'll be more standards in the future where all this is less confusing. It seems like a lot of carriers just tried to make their "own" technology and it ended up in this jumble of mini rarely used packet data modes, but those two 3G forms are the ones that have emerged.
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