What to Check First
- Press and hold the Volume Down and Power keys simultaneously until the device reboots. Typically this will take 11-12 seconds.
- Release the keys when you see the LG boot up logo.
- Turn off your device (you may need to remove, then reinsert the battery).
- Press and hold Volume Up (depending on your software, it may be Volume Down ) and Power buttons on the back of the phone at the same time. When the LG logo is displayed, release then immediately press and hold the Power button while continuing to hold the Volume Up (depending on your software, it may be Volume Down ) until the Factory data reset screen is displayed.
- Release all buttons when the Factory data reset screen is displayed.
- Press the Volume Down button to highlight Yes , then press the Power button to confirm.
- Press the Volume Down button to highlight Yes , then press the Power button once more to confirm.
- Your device will restart to perform the factory reset. Please do not remove the battery or attempt to power down during the factory reset process.
- From the Home screen, tap Apps > Settings > General tab > Backup & reset.
- Tap Factory data reset to erase all data and restore default settings.
Why This Can Happen
Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.
Safety and Model-Specific Guidance
Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.
Frequently Asked Questions
What should I check first for LG Mobile Phones - How to reset a G4 mobile phone?
Press and hold the Volume Down and Power keys simultaneously until the device reboots. Typically this will take 11-12 seconds.
When should I stop troubleshooting and contact LG?
Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.
Does this guidance apply to every LG model?
Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.