![]() After this, you can unlock the SIM with the new PIN you specified. After you get the PUK, enter it into your phone and enter a new PIN. If the SIM is a prepaid, the PUK code is sometimes printed in the card holder. The PUK code can be obtained from the carrier, after they verify you are the rightful owner of the SIM and contract. If you happen to forget your PIN, the only way to unlock the SIM is to enter a wrong PIN enough many times (3 or 5 usually), and after this the SIM asks for the PUK (Personal Unlock Key) code, which is sometimes referred to as PUK1. However, the carrier doesn't know your PIN, so if you forget it it can't be reset from the carrier directly. Usually (at least around here) a new SIM has a simple PIN, like 0000 or 1234, and the user can change this. This means that the phone will not connect to the network before a SIM is unlocked. The SIM PIN is a personal identification number that is used to unlock the SIM card in order to register it to the network. ![]() ![]() The network unlock code allows a phone that is restricted to a single carrier to be unlocked for use in other carrier's networks. If your SIM card is PIN locked, the network unlock code is useless. ![]()
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