C Cat New member Dec 24, 2010 #1 SIM card ? as the tilte says .. if a cell phone has the " GSM carriers like AT&T and T-Mobile " property .. what does that mean ?? does it mean that an SIM card works with it ?
SIM card ? as the tilte says .. if a cell phone has the " GSM carriers like AT&T and T-Mobile " property .. what does that mean ?? does it mean that an SIM card works with it ?
