FLY F350s - Uninstall an application; Troubleshooting Power and Audio; Phone Not Powering On; Poor Audio Quality

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Troubleshooting
This section lists some problems that you might meet while using your phone. If you feel
that your phone do not operate normally, please reset settings first, and then follow
Troubleshooting Guide. If you are still unable to solve problems, please contact the
authorized service center or the store from where you purchased the phone.
1. My Phone would not power on?
Possible Reasons for
Malfunction
Solutions
1. Press [Power] key shorter.
Long press [Power] key over 3
seconds
2. Battery has run out.
Charge your battery for a few minutes
then try power on again.
3. The battery is installed incorrectly.
Check if the battery is seated correctly
on the device.
4. Abnormally using leads phone not
to power on.
Please contact the local service
centre.
2. Audio quality seems poor?
Possible Reasons for Malfunction
Solutions
1. The current signal strength is
unstable.
You may be in the fast-moving state train or car,
etc.), according to the signal strength, select a
place with good signal to make a call to ensure