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5.1
FAQ
If you find exceptions when operating the mobile phone, restore the factory settings and then
refer to the following table to solve the problem. If the problem persists, contact the distributor
or service provider.
Fault
SIM card error
Poor received
signal quality
Device Over heat
5. Appendix
Cause
The SIM card is
damaged.
The SIM card is not
in position.
The metal face of the
SIM card is polluted.
Signals are
obstructed. For
instance, radio waves
cannot be effectively
transmitted nearby a
high building or in a
basement.
Line congestions
occur when you use
the mobile phone in
high-traffic hours
Gaming for long
periods of time
Streaming content
for hours like
YouTube or Netflix
etc.
Your settings aren't
optimal like Screen
brightness on full
blast? Animated
wallpaper? Widgets,
widgets
everywhere?
28
Solution
Contact your network
service provider
Check the SIM card
Clean the SIM card
with a clean cloth
Move to a place
where signals can be
effectively transmitted
Avoid using the
mobile phone in high-
traffic hours
Use less power like
Low Power Mode or
Battery Saver Mode or
Battery optimization to
reduces the amount of
power your phone is
using and can also help
preserve your phone's
battery life.
Dim your screen
brightness — Keeping
the screen at a
reasonable brightness
(not full blast) will take
some strain off your
phone's battery (and
your eyes).
Turn off Wi-Fi, GPS,
and Bluetooth —
Disabling battery-
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