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Alcatel One Touch HERO 8 - D820 Manual

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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.
My tablet cannot charge properly
•Make sure that your battery is not completely discharged; if the battery
power is empty for a long time, it may take around 20 minutes to display
the battery charger indicator on the screen.
•Make sure charging is carried out under normal conditions (0°C to
+40°C).
•When abroad, check that the voltage input is compatible.
My tablet cannot connect to a network or "No service" is
displayed
•Try connecting in another location.
•Verify the network coverage with your operator.
•Check with your operator that your SIM card is valid.
•Try selecting the available network(s) manually (see "12�1�7 Mobile
networks")
•Try connecting at a later time if the network is overloaded.
My tablet cannot connect to the Internet
•Check that the IMEI number (press *#06#) is the same as the one
printed on your warranty card or box.
•Make sure that the internet access service of your SIM card is available.
•Check your tablet's Internet connecting settings.
•Make sure you are in a place with network coverage.
•Try connecting at a later time or another location.
Invalid SIM card
•Make sure the SIM card has been correctly inserted (see "Inserting or
removing the SIM card").
•Make sure the chip on your SIM card is not damaged or scratched.
•Make sure the service of your SIM card is available.
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 date reset and the upgrade tool to perform tablet
formatting or software upgrading (to reset factory data, hold down the
Power key and the Volume up key at the same time). ALL User tablet
data: contacts, photos, messages and files, downloaded applications will
be lost permanently. It is strongly advised to fully backup the tablet data
and profile via Android Manager before doing formatting and upgrading.
and carry out the following checks:
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 and hold the Volume down
key to enter Safe Mode. This eliminates any abnormal OS booting issues
caused by 3rd party APKs.
•If neither method is effective, please reset the tablet using the Power key
and the Volume up key (holding both together).
My tablet has not responded for several minutes
•Restart your tablet by pressing and holding the Power key.
… 67 …


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