O2

Dear O2 Community, I received a text message on Thursday morning that my sim card has a bar on it and I can't make phone calls, send text messages, and can't use my data. I can't call customer service as I can't make phone calls with my Sim card. I w...

My daughters mobile phone number has been blocked by O2 (without a reason) and she cannot receive important texts and calls. Obviously she cannot call the customer service either, because she cannot use her number to call. Moreover, her online O2 has...