This has happened to me three different times over the past year or so. First LTE goes out and you're on 3G for a day or so, then finally it's just 1x data but the phone still works. Then the phone drops out and 'no service' appears. During the week of this decline, I try rebooting (of course), airplane mode, fiddling with the network settings, wiping dalvic, and other minor things. I've never tried a full on wipe and re-install.Has anyone had an issue where the phone will randomly not be able to connect to any cell service at all? It has happened to me twice this past week, the only thing to fix it seems to be a factory reset and clean install. But even then, after a few days service drops again.
For me, my LTE switched over to 3g, and then it dropped to 1x. After rebooting, I can't connect to Verizon at all. Not sure if my antenna is going bad or what. Anyone have this issue? Happened to me on an old CM14.1 nightly, and now the LineageOS 6/19 unofficial invisblek.
The only way out of it for me has been to go to Verizon and get a new sim card. It's free, but does cost you the time for the store visit.
If you go to a Verizon dealer they'll charge you $10.