on 27-02-2023 07:47
on 27-02-2023 08:12
Some things to try:
Manually search for another network
Reboot the phone
Turn off 4g in network settings
If still not working then contact O2 to remove the Roaming bar on your account.
If you message O2 on Facebook ( https://o2uk.co/O2CFB) , Twitter ( https://o2uk.co/O2CTW) or Instagram ( https://o2uk.co/O2CIG) , they should be able to help you with this.
on 27-02-2023 08:16
on 27-02-2023 08:16
As a matter of interest can you tell us which country?