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Personal Unblocking Keys (PUKs) for your mobile phone.
O2 PUK Codes
O2 Personal Unblocking Key
O2 PUKs, or personal unblocking keys, can be obtained by phoning O2 on 0870 241 0202 (or 202 from your O2 phone) or by visiting the O2 website.
The PUK can be used to unblock a mobile phone which has become blocked. Mobile phones may become blocked when a PIN (personal identification number) is entered incorrectly on three consecutive occasions. In some instances, the phone may become blocked, which requires a PUK to unblock it, and in other instances, the SIM (Subscriber Identity Module) card itself becomes blocked and again will require a PUK to unblock it.
Mobile phones are also blocked when they are reported stolen and if there is an outstanding payment on the account.
It is important to differentiate between unblocking phones (using a PUK) and unlocking mobile phones (using another type of code). More information on unlocking phones will be available here in the very near future. IF you are looking to change your mobile phone network provider and want to keep the same telephone number, then you need a PAC code - see www.paccodes.co.uk for more information and to get you PAC code.
Store your PUK code here!
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