Sony Ericsson T637
Replying to: Can an AT&T T637 be unlocked and used in UK by okrm
Re: Can an AT&T T637 be unlocked and used in UK
The T637 is simply a North American version of the international T630. Aside from network frequency (The T630 contains GSM 900 / 1800 / 1900 MHz whereas the T637 uses GSM 850 / 1800 / 1900 MHz) and colors, the two phones are identical.
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