on 19-12-2019 03:47
on 19-12-2019 06:22
on 19-12-2019 06:23
on 19-12-2019 06:52
on 19-12-2019 06:52
Your phone number is critical to your account and it should change immediately the number port has completed.
First thing to do is delete the app from your phone and reboot to clear your cache, then reload the app and see if it now shows the correct number.
If not, call customer service to get your account checked Guide: How to find help & contact O2