User's Manual

USER MANUAL
39
Abnormal
situation
Cause of occurrence Solution
Signal
receiving
difference
1. Use mobile phones in areas where
poor signal reception is received,
such as tall buildings or in the
basement.
If the signal is very weak, please move
to the empty space if the signal is very
weak, if the signal is very weak.
2. In the intensive period, the line
congestion caused by unable to talk.
Try to avoid.
Can not boot The battery is running out. To charge the battery.
Standby
time
becomes
shorter
1. Standby time is related to the
system settings of the network
operator. The same mobile phone is used
in different network, the standby time
is not the same.
In a bad signal reception area, please
temporarily shut down.
2. The battery depletion, battery
performance after a few years will be
gradually reduced.
Replace the new battery
3. When the signal is not received,
the phone will continue to launch,
looking for a base station, consume a
large number of batteries, resulting
in a short standby time.
Move to a better area or temporary
closure of the received signal.
SIM card can
not be used
1. SIM card damage.
2. The SIM card is not installed.
3. SIM card or SIM card contacts are
not clean.
1.Check back to the network operator.
2.Re install the SIM card correctly.
3.Clean the contact with a clean cloth.
No network
service
1. SIM card is not valid.
2. Not in the service area.
3. Weak signal
4. User line switch is correct
1.Contact with network operators.
2.Check the network operator's service
area.
3.Move out of the window or select
another service network.