i called verizon and they went ahead and unlocked my iPhone 4S, but when i insert a tmobile simcard nothing happens, im still on verizon. how do i disable it or make it read the SIM? its still activated under my account, the tmobile sim is the standard size so i went ahead and cut with siccors to fix of course without touching or cutting the gold part of the SIM. but nothing. any other way i can be sure its unlocked?