TrekStor SurfTab duo W3 Operating Instruction page 46

Why does my SurfTab show less storage space than
indicated on the packaging?
The storage capacity indicated on the packaging and in the
technical specifications refers to the total storage capacity of your
SurfTab. However, a portion of the total storage is also used by the
operating system and system applications.
Why am I getting no sound from my SurfTab?
You may have connected headphones to your SurfTab.
When headphones are connected, the SurfTab's speakers are
automatically disabled. Disconnect the headphones from the
SurfTab in order to activate the speakers again. If there is still no
sound from the speakers, check whether the SurfTab's sound is
switched on and whether the volume is set high enough.
Why does my SurfTab just switch off sometimes?
If the energy level of the battery falls below a critical level, the
SurfTab displays a corresponding warning. If you ignore these
warnings, the SurfTab is put into sleep mode at a charge level of 5
per cent in order to counteract total discharge of the battery. Total
discharge can lead to a situation where it is no longer possible
to charge the SurfTab. For this reason, connect the SurfTab to the
charger at this point at the latest in order to prevent data loss and
damage to the battery.
My SurfTab won't switch on. What can I do?
The battery may not be sufficiently charged to allow the SurfTab
to switch on. Connect the SurfTab to the charger (see Section 7)
to recharge the battery.
46 EN