Impossible
to connect
network
Signals are too weak, please try to another place with stronger
signal;
The cell phone is out of the network coverage of network
service provider;
SIM card is invalid, please contact your network supplier;
It display
message
upon
startup
Check if SIM card is installed correctly;
The auto lock function is selected, please input the cell phone
password before use;
Input PIN and input PIN function is enabled for every startup,
you must input PIN code;
Input PUK code: The cell phone will be locked when incorrect
PIN codes are inputted for three times, you have to input PUK
code provided by your network operator;
Poor
quality of
calls
Please check if the volume is adjusted improperly;
When this cell phone is used in the areas with poor receiving
signals, like near the high buildings or in the basements, the
wireless electric wave cannot be transmitted effectively;
When this cell phone is used in calling intensity period, like the
rush hours, calling failure is caused by network congestion;
Standby
time is
curtailed
Standby time is related to the system setting of network, maybe
the cell phone is used in the area with poor receiving signals.
Upon no signals, the cell phone will constantly launch signals to
search for base station and batteries will run out, so the standby
time is curtailed. Please use the cell phone in places with
stronger signal or power off it;
Please replace batteries;
SIM card
error
There is filth on the metal surfaces of SIM cards, please use the
clean cloth to wipe the metal contact point of SIM card;
SIM card is not installed well;
SIM card is damaged, please contact with your network service
provider;
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