Mine's been rock solid, and SIM cards are fairly primitive things... can't imagine it being an issue with then network.
You should be able to get O2 just to replace your SIM by popping in to a shop. Try that out first, and if it continues then go the warranty route on the phone.
Sounds like a phone issue or a SIM issue.
Mine's been rock solid, and SIM cards are fairly primitive things... can't imagine it being an issue with then network.
You should be able to get O2 just to replace your SIM by popping in to a shop. Try that out first, and if it continues then go the warranty route on the phone.