If your SIM card is locked and requesting a PUK code, simply find the packaging and enter the provided PUK code. Unlock the SIM Card without a PUK code However, if you lose the SIM packaging and ...

No code is needed to open up your iPhone for use with another ... How to update an unlocked phone without the SIM card If you’ve requested an unlock from your carrier, but have not got the ...

A PUK code is required if a GSM SIM card was locked after entering the wrong PIN code three times in a row. Entering a wrong PUK code ten times in a row disables the SIM card permanently.

[Jason Gin] wanted to reuse the SIM card that came with a ZTE WF721 ... he was able to work his way backwards and determine the unlock command and its PIN code. It turns out the PIN was even ...