O2

Hi, I'm trying to get information about using my phone is the USA. The first issue is that the app doesn't recognise my IMEI numbers (start with 86872506), and neither does the Web interface, although I used the phone successfully on a trip to Budape...

Hi. Just joined O2 (again) after spending the last few years with another carrier. I'm on a SIM-only contract which I was attracted to by the free roaming, especially in the US.I have an OPPO Reno2 which has given me no problems; it's the first ever ...