It seems like a lot of people have this problem, I submitted a report to nothing I’m hoping they reply with a solution. It’s really irritating the phone’s not usable at all. I have to be on WiFi all the time
Update: I was almost breaking my phone from frustration when I found something that works, switching off one simcard let’s the other work seamlessly so I’ve let my secondary simcard go. I just have one simcard on ATM and so far so good.