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Forum Posts

The number you have called is not recognised

When someone calls me they get the message "the number you have called is not recognised" This has been going on for several months, O2 replaced my sim and I've replaced the phone but the problem persists. What do I need to do?Thanks.

Gilly28 by Level 1: Joiner
  • 1186 Views
  • 2 replies
  • 0 kudos

Data Services not working when abroad

My wife and I were in Italy in August and my data services (Internet) would not work. We both have the iPhone 12 Pro and changed O2 tariffs in June (been with O2 for as long as I can remember) and have used data services abroad several times a year i...

Screenshot 2023-08-29 at 13.05.19.jpeg Screenshot 2023-08-30 at 22.52.52.jpeg

New SIM

My SIM card has been damaged and need a replacement. My O2 website is not enabling me to do it, only 'swap' sim card but I am not able to as it wants to text to my SIM / Mob number which is not available as damaged. How do I get a replacement SIM car...

Replacement Sim not working (connected but no calls or data)

Hi community, I recently had my phone stolen and O2 reissued my 5G sim card, the replacement sim card is being used in an older Iphone 7 temporarily. however although it is activated and shows connection to the O2 network in the top left i am unable ...

Sifo by Level 1: Joiner
  • 797 Views
  • 1 replies
  • 0 kudos

Mobile phone calls not working

My phone calls when using the mobile phone signal keeps cutting out and people cannot hear me. I have changed phone and it still happens. WiFi calls work OK though. I rang o2 to order a new sim, the call rep couldn't hear all of my call (the issue). ...

Trddr by Level 1: Joiner
  • 741 Views
  • 1 replies
  • 0 kudos

change phone number to o2

I have requested that my existing phone number be transferred to O2 This request was done on Monday 18th September. I have not had any information that this has been completed. I need the change completed soon. Please advise Kind regards Nigel Taylor...

Nigelrt by Level 1: Joiner
  • 671 Views
  • 4 replies
  • 0 kudos

Unable to access app on android

I spent much of yesterday trying to troubleshoot my o2 account (this included a lengthy phone call). Earlier I had been able to access it on my Samsung A20e android and on the website but then my app started to not recognise my user name or password ...

Can't send message with o2 - error 0

I desperately need to reply to an NHS message with a 4 digit number. It keeps coming up with an error (can't send message with o2 - error 0). I have checked my message settings on my phone and their are no premium restrictions and also tried on anoth...

SarahG24 by Level 1: Joiner
  • 1835 Views
  • 2 replies
  • 0 kudos

Resolved! Call history

I need my call history from 27/7/23 - 1/8/23. Where and how can I get it? Thanks

izzyhazel by Level 1: Joiner
  • 968 Views
  • 9 replies
  • 0 kudos