Failed sending calls and messages, in the Red Status appears INVALID SIM or without Signal.

Recently I bought Iphone 4s. I'm having trouble receiving and sending calls and messages, in the Red Status appears INVALID SIM or without Signal... I already restored the original settings, changed sim card and still got nothing fixed... what else can I do? Is it possible to change my Iphone 4s.

I saw in yootube that is very common problem now. I paid for Iphone 4s 749 $ and it has such king of problems, I am very disappointed. Can you advice me how Can replace for new one.

Similar Messages

Maybe you are looking for