No code is needed to open up your iPhone for use with another ... We’ve tried Doctor SIM, which promises to refund you if the unlock is unsuccessful, so that could be an option if you’ve ...

[Jason Gin] wanted to reuse the SIM card that ... signified successful unlocking, he was able to work his way backwards and determine the unlock command and its PIN code. It turns out the PIN ...

SIM locks are used to ensure subscribers finish their service contracts. If the contract period is over, the phone may be unlocked by entering a code from the carrier. Apple's iPhone brought the ...