I've had my device nearly a year. This past two weeks my phone will not connect to my carrier or any network. At home with wifi it works with wifi calling. Once I leave home or turn the wifi off I have:

-Not registered to a Network

- No incoming/outgoing calls or texts

-Phone is offline

I've tried: airplane mode on then off to reset, resetting network,  rebooting, Turing wifi on then off, changing Sim from 5g to light, clearing cache, calling my carriers customer service ( everything was verified as working on their end, they think hardwire problem on my end) and then a last resort full factory reset. After the factory reset I was able to use data without wifi for less than 5 minutes before the problem reappeared. 

Any solutions? Can this be fixed?