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my device plan has been cancelled

hi on the 11th October I paid my air time and device plan for 2 months I owed the air time plan has been taken but device plan payment returned please can you explain why though I know I have paid late but did pay upto date on the 10thbictober for my...

WiFi & VoLTE calls.

On my Samsung A70, WiFi Calls are not available and the VoLTE switch is greyed out. SIM card status shows IMS not registered. When I put in a SIM from another provider, VoLTE becomes available so it looks like an O2 problem rather than the device. I ...

Resolved! Bill

Hi I would like a paper bill

Internet access

Hello. I’ve just topped up my sim card today for £10 and my balance is shown as £10 but I don’t have internet access yet. Why is that? I need internet ASAP.

Cannot sign in to my o2 account on my apps on my iPad or iphone

I can not sign in on my iPad iphone app to get into my accounts to see my uses

Chinese sim

Sorry if this is a duplicate message...I'm in Beijing. Got a Chinese sim but can't send any messages. Was able to receive a call from a Chinese number. Any advice?

Sim unlock code

Hi I have a OnePlus 5t which I finished paying for a couple of years ago and upgraded to an oppo find X3 pro, I'm giving the OnePlus 5t to a friend and just wanted to know how to get a SIM unlock code for it as the phone is still in good condition, a...