However, any contacts and messages stored on the old SIM (not the phone) will be lost. If you’re abroad and unable to get a new SIM card or PUK code, consider using an app to unlock the SIM’s ...

[Jason Gin] wanted to reuse the SIM card that came ... largely negates any security measures the manufacturer tries to implement. [Jason] already knew what the SIM unlock command would look ...

Dial *456# from any other SIM card. Select "Get PUK". Enter the "Mobile Number" whose PUK you want. Enter your ID number. You will receive an SMS with the PUK to unlock the SIM card. What to do if ...

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card ... the phone may be unlocked by entering ...

Depending on where you buy it, your Android phone may be unlocked and can support SIM cards from any carrier, or it could be carrier-locked and require specific SIM cards. While it’s not always ...