4 Copyright © Nokia 20032 An overview of functions• MESSAGING CONCEPTYour phone combines the functions of a normal mobile phone and a messagingdevice. With the flip closed, you can use all the functions of the phone like inany other mobile. By opening the flip of the phone, you will find an additionalmessaging keyboard that is especially designed for easy text writing. See “Writingtext” on page 32.• MULTIMEDIA MESSAGING SERVICE (MMS)Your phone is able to send and receive multimedia messages made up of text andpictures. You may also be able to send and receive polyphonic ringing tones, andsave pictures and ringing tones to personalize your phone. See “Multimedia messages”on page 49 for more information.• POLYPHONIC SOUND (MIDI)Polyphonic sounds are used in ringing tones, alarm clock tones and messagealert tones. They consist of several sound components played at the same time,like an actual melody through a speaker. Your phone has sound components fromover 40 instruments that can be used for polyphonic sounds but the phone can playfour instruments simultaneously. The phone supports scalable polyphonic MIDI(SP-MIDI) format.You can receive polyphonic ringing tones using multimedia service, (see “Readingand replying to a multimedia message” on page 51), or download them to thegallery menu, see “Gallery (Menu 8)” on page 78 for more information.• GENERAL PACKET RADIO SERVICE (GPRS)GPRS technology allows mobile phones to send and receive data over a mobilenetwork. Applications such as WAP, MMS and SMS messaging, and Java mayuse GPRS.Your phone supports up to three simultaneous GPRS connections. For more informationon GPRS, see “GPRS” on page 89. Also, consult the PC Connectivity Guide. The PCConnectivity guide, Nokia PC Suite, and all related software can be downloadedfrom the Download Software section of www.nokia.ca.Before you can use GPRS technologyContact your network operator or service provider for availability and subscriptionto the GPRS service. Also, save the GPRS settings for each of the applications usedover GPRS.