i just purchased iphone 5 and it says locked sim in the top left and has a message that pops up saying "enter a valid sim with no pin lock to activate iPhone" with and unlock button. when i press unlock it has a keypad and asks for my pin. I have a pin1 and pin2 that came on paperwork with my phone which i have entered but it keeps saying invalid pin. What am I doing wrong, I don't want to enter it to many times as i've read it can permanantly lock the sim card.
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