Has this happened to anyone before, all of a sudden my iphone says no Sim. I can't make calls or get edge. I've tried turning it on and off but still nothing.
A trip to the apple store maybe?
Is the phone in a case? I dropped mine once and the little sim card door had popped open about 1/16 of an inch... maybe a tiny bit more.... that showed the same "No Sim Card"....... if its in a case and was dropped, maybe the sim card holder popped up and you didn't know it?