3 days ago my phone suddenly said SIM card registration failed. It has worked fine for 3 yrs, upgraded firmware 12 moths ago. It's always been on o2.
- I tried the sim in another phone and it works so it's not blocked
- I tried my wifes o2 sim in my phone and it say SIM card registration failed so its the phone.
- I tried a sim from 3 and it and it works so the phone is not blocked.
I thought maybe o2 have done something with my IMEI. I contacted o2 who said the usual, clean the sim, try other sims etc and then after going quiet for a minute said take the phone to an o2 shop who will check it.
What will they do in the shop? any ideas? I cant get to a shop easily so if it is something I can do myself it will save me the effort. (iv'e change the case and screen in the past and I am reasonable competent when it comes to pulling things apart)