25Copyright © 2004 Nokia. All rights reserved.■ Switching the phone on and offTo switch the phone on or off, press and hold thepower key.If the phone displays Insert SIM card even thoughthe SIM card is properly inserted, or SIM card notsupported, contact your network operator orservice provider.If the phone requests a PIN code or a securitycode, open the fold, key in the code, and press OK.See also Access codes on page 16.Your device has an internal antenna.Note: As with any other radio transmitting device, do nottouch the antenna unnecessarily when the device isswitched on. Contact with the antenna affects call qualityand may cause the device to operate at a higher powerlevel than otherwise needed. Avoiding contact with theantenna area when operating the device optimises theantenna performance and the battery life.