How to Unlock the PUK Code on a Mobile Phone If Locked?. GSM phones give you the option to set a PIN code on the SIM card as a security measure. If you only set a phone lock and you lose your ...

You now have an iPhone 3G that will run on any network. One note -- you'll need the latest baseband firmware for the iPhone, numbered 02.28.00, and you'll have to disable the PIN unlock code on ...

PIN codes are commonly used to unlock iPhone or Android devices, access online banking, get cash out of an ATM, and pay for items using a debit card.