If your LG G3 is struggling to connect to mobile data on the US Cellular network, the issue is likely rooted in outdated software, incorrect network settings, or reaching a hidden data cap.
Before diving into complex settings, try these immediate steps: lg g3 data not working us cellular
Cellular Diagnosis & Fix Assistant (for Legacy Devices) If your LG G3 is struggling to connect
If you're experiencing issues with your LG G3's data not working on US Cellular, here are some troubleshooting steps you can try: incorrect network settings
Switch Airplane Mode ON for 30 seconds and then OFF . This forces the phone to re-scan for towers.
Turn your device off, wait 15 seconds, and turn it back on. This clears temporary system glitches that might block data.