I've given my old iPhone to my Dad, and I've erased/sync'd/activated it through iTunes, and his O2 PAYG SIM works fine in it - on everything but GPRS/EDGE. The settings are there and correct in Network/Cellular Data, but I don't get a GPRS/EDGE icon or anything, and it won't connect to anything when not on WiFi.
Can anyone help?
Can anyone help?