on 07-08-2025 18:24
Hello,
I am currently in Romania and I have an active O2 Business contract.
I can use mobile data and send text messages (SMS), but I cannot make phone calls to UK numbers, even when I dial using the correct format (+44).
Could you please check if there is any block, restriction, or issue with international calling or UK numbers on my line while roaming?
Thank you very much!
on 07-08-2025 18:43
Some generic things to try:
Check data roaming is on in phone settings.
Manually search for and try other networks - even if flagged as forbidden.
Turn off 5g
Enable 4g calling (if on contract)
Change your data APN to "mobile.o2.co.uk" if not data is being received.
Check with O2 whether you have a roaming bar on your account. Do this via social media
If you message O2 on Facebook ( https://o2uk.co/O2CFB) , Twitter (X)( https://o2uk.co/O2CTW) , they should be able to help.