User's Manual

Table Of Contents
Troubleshooting
135
PIN/ PUK code lock
Possible reason Solution
Enter wrong
PIN Code( Personal
Identification Code)
or PUK Code
(Personal Unlocking
Key)
Enter correct
password
N.B
1. If you enter an incorrect PIN code three times in
succession, many SIM and phone functions will be
locked. For more details, please refer to “Safety
Precautions”.
2. If you do not know the correct PIN code and
PUK code, please contact your operator or network
service provider.
Bad call quality
Possible
reason
Solution
The signal
changes
suddenly
Maybe you are moving at
high-speed (e.g. on a train
or bus). Observe the
signal strength and select
the place with the
strongest signal to make a
call and ensure better call
quality.
The area does
not have a
good signal
Move to a more open
area.