on 18-12-2019 07:35
on 18-12-2019 07:47
You may have a roaming bar on your account so contact customer services to check Guide: How to find help & contact O2
In the meantime, try a manual network selection of a different network.
on 18-12-2019 10:18
on 18-12-2019 10:18
Sometimes a simple reboot of the phone helps too.
on 18-12-2019 16:16
on 18-12-2019 16:19
on 18-12-2019 16:19
on 18-12-2019 16:21
on 18-12-2019 16:28
on 18-12-2019 16:28
Always the best bet but O2 should work fine in Poland. There will be either a roaming bar on the phone or the settings are wrong. Good luck anyway and enjoy your time in Poland
on 18-12-2019 16:31
on 18-12-2019 16:31
Have you checked with customer services?
on 18-12-2019 17:39
18-12-2019 17:49 - edited 18-12-2019 17:50
18-12-2019 17:49 - edited 18-12-2019 17:50
Did you ask them to check for roaming bars and you are using Android, yes?
Have you rebooted the phone since if they made any account changes?