The acronym PUK is derived from the term Pin Unlocking Key. The PUK (or PUC) number is the PIN code needed to unfreeze the sim card. Has your mobile phone stopped working? Did you enter an incorrect pin number too many times? Is it showing a Locked SIM message? Does it ask for a PUK code? If it asking for a PUK key then you have probably messed with the security settings on your cell phone and the SIM card is now blocked.
Is your mobile phone SIM blocked? Is it asking for a PUK code?
