Kia Cerato Owner's Manual page 264

Features of your vehicle
Using a mobile phone or a two-
way radio
When a mobile phone is used inside
the vehicle, noise may be produced
from the audio system. This does not
mean that something is wrong with the
audio equipment. In such a case, use
the mobile phone at a place as far as
possible from the audio equipment.
CAUTION
When using a communication
system such as a mobile phone
or a radio set inside the vehicle, a
separate external antenna must
be fitted.When a mobile phone or
a radio set is used with an inter-
nal antenna alone, it may inter-
fere with the vehicle's electrical
system and adversely affect safe
operation of the vehicle.
4 168
WARNING
Do not use a mobile phone
whilst driving. Stop at a safe
location to use a mobile phone.