What are the PUK, PUK2, and UPUK codes?
The Personal Unblocking Key (PUK) code and the PUK2 code (8 digits) are required to change a blocked PIN code or PIN2 code, respectively. The UPUK code (8 digits) is required to change a blocked UPIN code. If the codes are not supplied with the SIM or SmartChip card, contact the operator whose SIM, SmartChip or USIM card is in your device.
The Personal Unblocking Key (PUK) code and the PUK2 code (8 digits) are required to change a blocked PIN code or PIN2 code, respectively. The UPUK code (8 digits) is required to change a blocked UPIN code. If the codes are not supplied with the SIM card, contact the operator whose SIM or USIM card is in your device.