Haier C1100 User Manual page 26

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 Please check if the phone number is valid.
Weak talk quality
The contact can not get
your voice when making
phone call
Receiver sound is too low
The mobile phone has a
weak receive signal or
usually drop in the phone
call
22
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 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.
Please check if your mic has blocked by fittings or
other blocks.
Please check if your receiver volume has been
adjusted to the minimal.
Please check if the phone has a strong signal.
If no signal, please use it in a strong signal place.