PUK stands for personal Unlock code. This is not a lock code on the Phone. This code is a lock on the sim. When you enter the PIN number wrong thrice the sim gets blocked. PUK code is needed to unblock the sim. To get the PUK you need to contact your sim Provider (Network Operator. PUK -2 come when the PUK -1 is also entrered wrong. you need to cotact your Netopwrk operator.
My samsung Sgh-F270 beat turs off automatically sometimes.
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