Failure Analysis
Symptoms
Possible Causes
Solutions
Inadequate battery
capacity
Charge the battery
Unable to
turn on the
phone
Poor contact
Reinstall the battery
Automatic
power-off
Seriously poor battery
capacity
Recharge the battery
Deceasing of battery
performance
Replace the battery
Inadequate
standby time
Poor network signal
Turn off the phone as
the signal is poor.
Poor network signal
Move to other places
Unable to
connect the
network
Out of the service
area
Make sure your phone
is in network service
area
Call drop
Poor network signal
Move to other places
Do not ring
upon
incoming
calls
“Silent” profile or
minimum volume
selected.
Enter “User Profile” to
change the profile or
check the ringing volume.
Prompt to
input PUK
UIM card locked due
to the continuous
entering of wrong PIN
code for three times.
Contact your network
operator.