I have a pantech laser and i tried to set a password lock. It would only work like once so i stopped trying to set it and put my phone down (it automaticly locks after about 15 seconds). Then i went to check my texts and it kept askin for a PUK code. i had no idea wat that ment so i tried my usual passwords and it kept saying "change code." and then i put in a password then it said "re enter password" and so i did and it happened like a bunch of times after that. and it wouldnt let me get off of it so i turned it off and took out my battery a few times and it still wouldnt work.and now it says i m using an incorrect sim card. I need major help. what do i do? Thanks.