I’m having same problem for several days now. Researched for hours and did everything recommended. Restarted ipad, turned off iPad for 30+ seconds Airplane mode on for 30 seconds, then off Turned off cellular data, then back on Reset network setting (Several times) several other things. I finally chatted to Verizon AI. Was told to do all the things I’ve done several times. FINALLY got a real person chat. They got me showing my iPad using my iPhone camera. I was walked through deleting cellular, then adding it back. That worked. I went all over using cellular connection only for at least 5 mins. I closed the chat. Got up this morning and damnit the cellular icon thingy on top right of iPad was not there at all again. I turned off Wi-Fi and I’ll be damned. Cellular connection was working anyway. But WAIT…….about 5 mins later I got a message saying it’s not connected. So I’m not sure what the hell is going on. Going to follow this I guess. And do a long ass chat contact again.