could i take a motorola phone that was serviced by nextel sprint and use it with a t-mobile sim card. it has a place for a sim card
Are you sure it is a SIM card, (thought Sprint uses CDMA phones)not a micro SD card? If your phone is a GSM type it will use a SIM card, if it is a CDMA phone it doesn't have a SIM card and won't work with T-mobile. Read the sticky on how to unlock a razr in the top of this forum, will give you instructions and tell you where to look for links to the software required to unlock your phone if it is indeed a GSM phone.
