AT&T: IPhone 3G
Tmobile: Samsung Memoir
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AT&T: IPhone 3G
Tmobile: Samsung Memoir
Hi until you unlock your samsung memoir phone from t-mobile network you can't use your AT&T sim card ..To fix this unlock your samsung phone using sites like Prounlocking.com here they render unlock code for all mobile models at reliable cost ..After unlocking your phone you can freely use it with AT&T sim card...