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“G” is a spec for carrying data over the cellular airwaves. The bigger the preceding number, the faster the spec.
EDGE = 2.5G. AT&T. Theoretically it can run at 144 Kbs, the same as an old ISDN line. However expect real world speed between 56Kbs – 100Kbs.
HSDPA (AT&T) and EVDO, Rev A = 3G. Potentially up to 1.5Mb, the same as a T-1. Real world speeds for HSDPA are 1Mb’ish and EVDO RevA is 800-900 Kbs’ish.
Now the real issue as far as I am concerned is that AT&T has slowed down their rollout of 3G equipment in favor of some upgrade to their EDGE network that will improve speeds up to the 144 Kbs max. And they are doing this to accommodate the iPhone.
So unless this is done as part of a long term agreement between Apple and AT&T, the door has been left open for Verizon with the largest EVDO network to pick up the next generation iPhone.
That means if the next iPhone rolls out within 2 years, watch out for contract cancellation fees and full price for the phone, no upgrades. And oh, btw, if you love AT&T, you will be in ecstasy with Verizon.
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'17 Cayenne
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