Ecom Tab-Ex 03 DZ1 Manual Del Usuario página 24

You can set the device to turn off when you press and hold the Side key. Launch the
Settings app, tap Advanced features → Side key, and then tap Power off menu
under Press and hold.
Forcing restart
If your device is frozen and unresponsive, press and hold the Side key and the Volume
Down key simultaneously for more than 7 seconds to restart it.
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