I have had a mobile phone contract with O2 for approximately 9 years. I have always paid my bills in full, on time and not given O2 any reason for complaint.
I have always had the same 2G sim card throughout several contract renewals and different phones.
My phone recently started showing a “sim error”, I thought nothing of it for the first few times and simply cleaned off the card, re-inserted it and carried on, the phone would be fine for the next day or so. I decided to contact O2 as I thought that the sim card may need replacing and this would most likely solve the p