Lenovo TAB3 8 User Manual page 28

Troubleshooting
Insufficient memory prompt appears during app installation
Please free up some memory and try to install again.
The touch screen does not work or is not sensitive
Please hold down the On/Off button for more than 8 seconds until the device turns
off. Then switch it on again in normal way.
Device does not power on or system crashes
Please charge the battery for half an hour and then hold down the On/Off button for
more than 8 seconds until the device turns off. Then switch it on again in normal
way.
There is no sound or the other person cannot hear during a call.
Please adjust the volume using the volume button.
The device cannot access the internet via wireless network
Restart the wireless router or go to Settings and restart WLAN.
The device cannot wake up from sleep mode
Please hold down the On/Off button for more than 8 seconds until the device turns
off. Then switch it on again in normal way.