I've got a Nokia N8 I've had two or three years. It's had the same SIM card since new.
I'm on O2 PAYG.
Definitely working fine up until yesterday.
Today - all day - I've had no signal bars for the mobile phone signal.
Checked the postcode on the O2 service status webpage, and they claim all services working normally, although they do mention work scheduled on the masts for tomorrow, 7th Feb. Coincidence, or...?
Anyway, switched phone off and on again, and am now getting the message: "SIM card registration failed", which I didn't have before I rebooted. Is this likely to be simply a function of the network being unreachable - even though O2 don't acknowledge any service issues - or does it mean my phone has packed up?