Try the following to troubleshoot your phone’s touch buttons:

1. Check to make sure the touch buttons are enabled in your device’s settings.
2. If the touch buttons are disabled, enable them in your device’s settings.
3. Inspect the touchpad to see if there is dirt, dust, or other debris built up that is blocking the touchpad.
4. Reset your phone to factory settings.
5. If the above steps do not work, contact technical support.