User`s manual

76
Display
information
while turning
on
Check if the SIM card is installed correctly
Handset lock password. If the handset lock is activated, you have to
input handset password.
Input PIN: Inputting PIN while turning on each time is activated,
you have to input the PIN code.
Input PUK code: When you’ve input wrong PIN code for 3 times
will lock the SIM card. You need to input the PUK code provided by
your network provider.
Poor quality
of calling
Please check if the sound volume is tuned improperly
In an area with poor receiving condition, example: basement, the
signal might be weak. Try searching a location with stronger signal
reception and call again.
While using the mobile phone in the peak period of
communication, like commute time, you may be unable to call