SIM disconnected

This has happened across two phones 

And across e sim and physical Sims.

I can be in an area I know has signal 

Not overly crowded or built up etc 

Then suddenly a ! Will appear next to my signal bar 

While it still claims to have 4 or 5 g signal 

But I don't have any signal 

I have to go into my phones settings and switch the SIM on and off again to get it to work.

Never run out of data etc anyone else have this issue or just me ?

Getting frustrating having to do this daily now