on 30-07-2020 12:38
on 30-07-2020 12:42
If you have wifi calling enabled, turn it off first.
If you have an iPhone also, you may have to dial 176002.
As a last resort, customer service should be able to help you Guide: Coronavirus Community Help and Support
Guide: All you need to know about O2 Voicemail 901
on 30-07-2020 12:47
30-07-2020 12:53 - edited 30-07-2020 12:55
30-07-2020 12:53 - edited 30-07-2020 12:55
I'd suggest you call customer service then please.
Edit: However, wifi calling may still be enabled on your account. You can check this in your MyO2 under the device settings http://www.o2.co.uk/myo2