Quote:
Originally Posted by tamanaco
I stand corrected... I meant to say GSM. Forgot to mention that traveling to Canada with an AT&T phone is also convenient.
Edit:
Corrected my post above.
Correct me if I'm wrong, t-mobile GSM for voice is fine outside the US, but t-mobile runs its 3G protocols for data on different bands than AT&T. My understanding, again I could be wrong, is that AT&T runs their 3G protocols in a Band that is also commonly used for 3G protocols outside the US. This is the reason why a t-mobile N1 can not reach 3G speed in the AT&T network.
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Most all phones with GSM can be used almost anywhere. It's an international standard. I think the US is the only place that uses CDMA still.
It's really the 3G frequencies that are different b/w ATT and T-mob. The reason the t-mob N1 can't get 3g on ATT is b/c it doesn't support the proper frequences, which are 850mhz and 1900mhz if i'm not mistaken.