144. Basic functionsTurning the phone on or offPress and hold the key for one second.Note: If the phone asks for a lock code, see ‘Lock code’ onpage 52. If the phone asks for a security code, see ‘Securitycode’ on page 52.WARNING! Do not switch on the phone when wireless phoneuse is prohibited or when it may cause interference or danger.About the antennaYour Nokia phone has a fixed-length antenna. Do notattempt to extend or remove it.Normal positionHold the phone as you would any other telephone, with theantenna pointed up and over your shoulder.Tips on efficient operationAs with any other radio transmitting device, do not touchthe antenna unnecessarily when the phone is switched on.Contact with the antenna affects call quality and may causethe phone to operate at a higher power level than otherwiseneeded.Checking signal strengthYour phone operates on radio waves. Radio signal coverageis maintained by a wireless network, and the quality of callson your phone depends on the strength of the wireless radiosignal.
