My iPhone 4 is not recognizing the sim card. I went to setting and selected About and it says the carrier O2 so I bought an O2 sim card but still not working, on the top left corner of the phone says No service. When I insert the micro sim card in the phone it says searching but after seconds it says No Service could some one help me to fix this thank you.
См. статью: IPhone 4 not recognizing sim card?