Haier C55 User Manual page 40

Common problems
Can not charge
Can not power on
Insert the R-UIM card but can
not read the information in the
R-UIM card
The mobile phone displays
"Input PUK Code"
Can not make phone call
Weak talk quality
32
Check item
Please check if the charger is properly connect to the
phone and the power source jack.
Please check if the battery level is too low;
Please check if the batter is properly loaded;
Please press Power Key enough time.
Please check if properly inserted the R-UIM card;
Please check if your R-UIM card is valid.
Please communicate with the service provider to get
the PUK code and use it to unlock.
Please check if the phone number is valid.
Please check if you are in service area.
Please check if the phone signal is strong enough;
If you are in the building, please move the phone or
move near the window.