08-13-2013 5:49 AM
08-23-2013 9:57 AM - edited 08-23-2013 9:58 AM
PUK sounds like you're trying the SIM card unlock PIN. This is a PIN to restrict other people from using your SIM card. You can get the PUK code from AT&T. If you happen to run through all 10 attempts, the SIM card will be blocked and you will need a new SIM card.
Now if you need a SIM unlock for your phone, so you can use another SIM that's not from say AT&T, then you need a unlock code for your phone. You can call customer care at 611 (or 800-331-0500) assuming you meet the eligibity requirements either having fulfilled your contract, have an account in good standing, or you paid for the phone outright.
To unlock your phone after you receive your code, you need to insert a SIM from another provider (not AT&T). It will automatically prompt for the code.
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