Konka M520 User Manual page 89

·Do not use corrosive chemicals, cleansers or strong detergents to
clean the phone. Dip a soft towel in soap water to clean the phone.
·If your phone or any accessory doesn't function normally, please
send them to the nearest authorized service facility . The qualified
personnel there will assist you, and if necessary, arrange for service.
5.2.2 Troubleshooting
This section lists some problems that you might face while using your
phone. If you feel that your phone is not functioning normally, please
reset settings first and then refer to the following Troubleshooting Guide.
If you are still unable to solve the problems, please contact the
authorized service center or the store from where you purchased the
phone.
Problems
Can not answer or
make a call
Low voice
No ring
Solutions
Make sure that the phone has been switched
on.
Make sure that the battery is charged.
Make sure that the signal intensity is high
enough.
Make sure the own number function in the call
setting is system preset or number sending.
Make sure the line switch in call setting is the
system preset line. Check whether you have
set up call barring or fixed dialing or any other
safety function.
Check whether you have set up call divert.
Check whether you have inserted the proper
SIM card correctly.
Check if the volume has been set too low.
Check whether you have set up the "Vibrating
Only" option.
Check whether the ring volume is not too low
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