Troubleshooting- volume keys doesn't work and not respond to Phone / Tablet


If you encountered some problems with your volume keys,  try the following tips to for troubleshooting :
  1. Launch Camera and try whether you can take a photo by pressing volume key. Note: Please launch Camera > tapping upper-left gear icon to functio menu > Set volume key as Shutter .

  2. Reboot your phone.

  3. To access to  Safe Mode, long press the power key then tap Power Off > OK. If your phone works well in Safe Mode, malfunction might be caused by third-party apps  when you use in Normal mode. Please restart your phone and check again.

  4. Back up your data and perform factory data reset.