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Samsung Galaxy S4 AT&T SIM network unlock pin
I just received my SIM card..
When I put it in, the phone comes on and wants me to enter an unock pin...
I was using this phone with StraightTalk with no issues...
Please let me know what I need to do, So I can start using my service.
You need to get your unlock code from Straight talk and then put it into your phone to unlock it or get a unlock code off eBay ect.