I am missing calls from people that ring me since I up graded to Iphone5 with new nano sim. I have signal bars but my calls go straight to "your call cannot be accepted at the moment blah blah blah" the caller then sends me a text to tell me about the reply I am getting. I have to switch on airplane mode then off again and if that doesn't work I have to switch my phone on and off again to get it to work. Can anyone help with this.
