827 Views 1 Reply Latest reply: Nov 13, 2009 10:56 AM by neuroanatomist
You've taken all the correct troubleshooting steps. One more potential cause could be the SIM card - try removing and reseating it, or ask O2 for a new one (should be free). Else, it does sounds like a hardware issue. If you're near an Apple Store, take it in.
There is no charge for them to diagnose the problem (they have a device to test cellular reception, for example). Since you're out of warranty, there will be a charge for repair, if needed.