Cannot Be Switched On; Switches Itself Off - FLY M 90 User Manual

14.
Trouble Shooting
If your phone does not work properly, read the followings to see if
you can find a solution. If none of them helps, contact your nearest
service center for help.
Your phone cannot be switched on
Possible reason
You didn't hold the
power key for long
enough.
The battery power is
used up.
The battery is
improperly installed.
Your phone switches itself off
Possible reason
The auto power-off
function is activated.
The battery charge is
too low.
What should you try?
Retry by holing the power key for about
2 seconds.
Charge the battery.
Reinstall the battery.
What should you try?
Deactivate auto power-off function.
Charge the battery.