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SHARK User Manual
31
Troubleshootings
Prior to contacting the aftersales service providers, please make the following simple
check
Common Troubles Causes and Resolutions
Cannot
power on
-
Press the end call key for more than 1 second,
-
Check if the battery is not inserted well. You
may take out the battery first and insert it again
after several seconds,
-
Check if the battery is out of power,
cannot connect network
-
Signal is too weak, please try to another place
with stronger signal;
- The mobile phone maybe out of the network
coverage,
- SIM card is invalid, please contact your network
supplier;
Phone screen displays
message upon startup
-
Check if SIM card is installed correctly;
-
if auto lock function is selected, please input
the cell phone password before use;
-
please input PIN code if it is required;
- Input PUK code: The cell phone will be locked if
inputting incorrect PIN codes for three times,
you have to input PUK code provided by your
network operator;
Poor quality of calls
-
Try to enlarge the volume;
-
When this 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 t he 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
31


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