Standby time
becomes
shorter
1. The standby time
is connected with the
system settings of
network provider. A
phone’s standby time
may vary in different
network.
Please switch off your phone in
weak signal area.
2. Battery wears out
after several years.
Buy a new battery.
3. The phone keeps
transmitting signal to
search station if no
network found, which
will exhaust power
and shorten standby
time.
Move to better network area or
switch off phone.
No network
service
1. Invalid SIM card
Consult network operator
2. Out of service area
Check the service area of network
operator.
3. Weak signal
Move close to window or change
network.
SIM card
can’t work
1. SIM card damaged
Consult network operator for
maintenance.
2. SIM card not
properly installed
Reinstall the card
3. Dirty contact face
of SIM card
Clear the card contact
Can’t send
text message
Not register SMS
service or not enter
the number of SMS
center.
Contact network operator or enter
the number of network operator.
Can’t dial or
receive a call.
The fixed dialing or
call barring is on.
Turn off the fixed dialing or call
barring.
PIN error
Input wrong PIN code
up to 3 times.
Contact network operator.
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