User's Manual

16
Troubleshooting
Before contacting the service centre, you are advised to
follow the instructions below:
• You are advised to fully charge ( ) the battery for
optimal operation.
• Avoid storing large amounts of data in your tablet as this
may affect its performance.
• Use Factory data reset and the upgrade tool to perform
tablet formatting or software upgrading. All user tablet
data: contacts, photos, and files, downloaded applications
will be lost permanently. It is strongly advised to fully back
up the tablet data and profile before doing formatting
and upgrading.
Please pay attention that after Factory data reset is
performed you may be requested to enter Google account
credentials
(1)
that were used on this device before Factory
reset. Otherwise you will not be able to use the device.
If you don’t remember your Google account credentials
please complete Google account recovery procedure. In
case you don’t succeed in it
• Please apply to authorized repair center, but remember
that it will not be regarded as warranty case.
My tablet cannot be switched on or is frozen
• When the tablet cannot be switched on, charge for at least
20 minutes to ensure the minimum battery power needed,
then try to switch on again.
• When the tablet falls into a loop during power on-off
animation and the user interface cannot be accessed,
press the Power key to Pop up the options, then long
press "Power Off" to enter Safe Mode. This eliminates any
abnormal OS booting issues caused by 3rd party APKs.
My tablet has not responded for several minutes
• Restart your tablet by long pressing the Power key for
about 10 seconds.
My tablet turns off by itself
• Check that your screen is locked when you are not using
your tablet, and make sure the Power key is not mis-
contacted due to unlocked screen.
• Check the battery charge level.
(1)
Applicable for Android OS versions starting from 5.1.