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Possible causes
Files do not
Unsupported file format
open
The screen
does not turn
Proximity sensor problem
on when I
receive a call.
No sound
Vibration mode
Hangs up or
Intermittent software
freezes
problem
Appendix
All manuals and user guides at all-guides.com
Possible corrective measures
Check the supported file
formats.
If you use a protection tape
or case, make sure it has not
covered the area around the
proximity sensor. Make sure that
the area around the proximity
sensor is clean.
Check the settings status in the
sound menu to make sure you
are not in vibration or Do not
disturb mode.
Press and hold the Power/Lock
Key + Volume Down Key for
about 10 seconds to reboot
your device.
100
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