Any help would be appreciated before I give up on this phone. Thanks!
The LG G3 has a known design flaw where the SIM card tray does not hold the card tightly enough against the internal contacts. Over time, the connection becomes loose, leading to an error. lg g3 sim card error us cellular
This clears saved Wi-Fi passwords and Bluetooth connections but often fixes cellular registration errors. Any help would be appreciated before I give up on this phone