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Resolved! No data/visual voicemail after SIM Swap

My mum's phone was recently stolen, we've got the new phone, ordered a 5G ESIM and had it activated. It's been a few days now and most features apart from SMS/Calls are not working, the phone won't connect to data, has no wi-fi calling, personal hots...

Resolved! People I have never contacted returning my calls

I have noticed for a few weeks now that I am getting phone calls from people I do not know, and have never contacted, saying that I have called them from my mobile phone number, and that they are returning my missed my call to them. They seem confuse...

Resolved! Setting up new phone

No sim card

Resolved! Do I need to use the new SIM I received when I upgraded my plan?

I've just upgraded my SIM only plan online and the new tariff allowances are already showing on the MyO2 Account page. I've been sent a new SIM which I'm expecting in a day or 2 but my question is - do I need to install this new SIM when I get it, or...

Resolved! "Unknown Number" incoming from known contacts

Having just switched from S21 to S23, and migrated all data/contacts etc to my new handset, my incoming caller id doesn't seem to be recognising numbers from my contact list...I've watched a number of videos suggesting ways to fix this. Have tried re...

Resolved! Switching phone number

Would it be possible to switch two phone numbers around, one from giffgaff to O2 and likewise from O2 to giffgaff?

Resolved! Renewing Contract

I am trying to renew my contract and you say you have sent me a link in an email but no email has been received. I have tried several times

Resolved! Cancel Disney Plus

Please advise how I can cancel Disney Plus as my free six months come to an end. Thank you

Resolved! Transferred from virginmobile

I've just been transferred from virginmobile to O2, because I already had an O2 account for my mother-in-law my virginmobile won't register under my email. How can I swap the accounts around

Resolved! Not receiving messages from my app

Good afternoon. I am trying to manage my accounts through my apps and I have been asked to enter a one time pass code. I have requested the code but have not received it. I checked with my bank and they have said that my phone number is correct and t...

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