Nokia 6310i User Manual page 26

Warning: Do not switch the phone on when wireless phone use is prohibited or when it may cause
interference or danger.
TIPS ON EFFICIENT OPERATION: Your phone has a built-in antenna. As with any other radio
transmitting device, do not touch the antenna unnecessarily when the phone is switched
on. Contact with the antenna affects call quality and may cause the phone to operate at a
higher power level than otherwise needed. Not touching the antenna area during a phone
call optimises the antenna performance and the talktime of your phone.
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