Strange problem has started happening with one of our iPhones, its a launch iPhone 4 which has always worked flawlessly. However it has recently started going to 'Searching' or 'No Service' and can only reconnect by rebooting the phone at which point it reconnects with 4-5 bars. When it does this switching airplane mode on and then off brings the bars back but without the network operators name and at that point it still cant make or receive calls etc. I have read up about it on the web and it seems to have happened to loads of people however as of yet Im not aware of any concrete resolution. Things I have tried so far: * Reset network settings * Gotten a replacement sim * Turned of 3G Im planning on restoring the phone next however I have read of people saying that didnt work for them either. Im beginning to think it may be a hardware problem, but if anyone knows how to fix it its probably in these forums! If it is a hardware issue the phone is out of warranty so what would Apples charges be to help me with this? Im in the UK by the way and my network operator is Orange. Help!