PIN and PUK codes are unique to each SIM card and aren’t universally applicable. While it’s advisable to change the PIN code, the PUK code typically cannot be altered. PIN and PUK Codes ...

Phone theft is bad enough, but criminals are now targeting SIM cards to access sensitive information, including bank ...

When you enter the wrong PIN more than three times, your SIM card will be locked. This is a security measure to prevent people from guessing your PIN. You'll need a PIN Unlocking Key (PUK ...

[Jason Gin] wanted to reuse the SIM card that came with a ZTE WF721 wireless ... backwards and determine the unlock command and its PIN code. It turns out the PIN was even being sent over the ...