Hi, im new here, so i really will apreciate ur help. This morning i was trying to update my iphone 3g to a 4.2 version..so when it finished my carrier was just gone. I even dont have Carrier on General Settings. I dont have any problem with the internet, i can check my email account with no problem, but i dont have signal, and says Invalid Sim card sometimes. My carrier was T-mobile. Ive tried like everything but nothing works PLEASE SOMEBODY HELP ME!!!! Txhanks
ps> i dont have cydia either
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