G4 keeps dropping cell signal. (opens in new tab)

Hello, got a Verizon LG G4, model VS986, Android 6.0. Lately, well for the past couple of years, it's been dropping signal, shows zero bars and on the lock screen will either show 'no service' or 'emergency calls only'. WiFi works, and no clue if the 3G band is theoretically affected, as...