How to make calls abroad

I’ve gone abroad with my Fairphone 1 for the first time. I can’t connect to any networks, send or receive texts or calls. I can connect to wifi. I’ve tried all the configurations of mobile networks / data roaming on/off and everything else, but can’t get connected to anything. I’m in Hungary, and my phone is from UK, using Co-Op/Orange network.

6 posts were merged into an existing topic: Roaming abroad not working