User guide

Acer F900 Smartphone User Guide86
Why can’t I play
my music files?
You may be trying to play a file
that is not supported. Refer to
“Multimedia” on page 88 for
more information.
System infor-
mation and
performance
How do I check
the OS version of
my device?
Tap Start > Settings > System tab
> System Information to check the
OS version and other hardware
and software information.
How do I restore
the system back
to its default fac-
tory settings?
Perform a clean boot. Refer to
“Clean boot” on page 76 for
more information.
What should I do
if the system
stops functioning
normally or
crashes?
Perform a reset. Refer to “Soft
reset” on page 75 for more infor-
mation.
Power I couldn’t turn on
the device.
The battery power may be
depleted. Recharge the device.
Refer to “Charge the battery” on
page 16 for more information.
Even when fully
recharged, the
battery seems to
run down very
quickly.
Check power saving options. Tap
Start > Settings > System tab >
Power to configure power saving
options.
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