@Tommich
You'll need to be connected to a network that still has 3g available to make calls. Many have turned off 3g now though.
Try manually searching for a different network to use.
You can still use WhatsApp to call others with the same app.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
