Motorola W375 service manual Product Overview, Features

Level 1-2 Service Manual Product Overview

Product Overview

The Motorola W370/W375 features a global system for mobile communications wireless interface and general packet radio service (GPRS) transport technology. It also features a simplified icon and graphical user interface (UI) for easier operation in addition to short message service text messaging (SMS), speed dialing, quick dialing, an alarm, a calculator, games, and an address book. The W370/W375 is a tri-band phone that allows for roaming within the EGSM900 / DCS1800/PSC1900 or GSM850 / DCS1800/PCS1900.

W370/W375 telephones support GPRS class 8 and SMS in addition to traditional circuit switched transport technologies. GPRS, where available, provides substantial increases in mobile data communications performance and the efficient use of radio spectrum. Data transmission rates for GSM networks can potentially increase from the current rate of 9.6 kbps up to a theoretical maximum of 171.2 kbps. An increased data rate is by no means the only benefit provided by GPRS. A key advantage is the provision of a permanent virtual connection to the network. This "always on" connection is possible because GPRS uses packet data transfer so that, for example, email can be downloaded in "background mode." There is no need for the user to reconnect before requesting a service, eliminating connection set-up delays and adding convenience and immediacy to data services access. The "virtual" nature of this connection means that network resources are not consumed during periods when a user is not actually sending or receiving data.

The telephones are made of plastic. The display and speaker, as well as the 25- key keypad, transceiver printed circuit board (PCB), microphone, charger and headphone connectors, and power button are contained within clam shell form-factor housing. The userreplaceable 850 mAh Lithium-Ion (Li-Ion) battery provides up to 4.2-8.24 hours of talk time with up to 130- 293 hours of standby time. The phone accepts 1.8V/3V mini subscriber identity module (SIM) cards that fit into the SIM holder next to the battery. These telephones feature a 128 x 160 pixel color graphics display and an internal antenna.

Features

W370/W375 telephones use advanced, self-contained, sealed, custom integrated circuits to perform the complex functions required for GSM GPRS communication. Aside from the space and weight advantage, microcircuits enhance basic reliability, simplify maintenance, and provide a wide variety of operational functions.

Features available in this family of telephones include:

•A 128 x 160 pixel color graphics display

•Internal antenna

•Caller line identification (CLI) (Network, subscription and SIM card or service provider dependent feature. Not available in all areas.)

•Lower voltage technology that provides increased standby and talk times

•Extended GSM (EGSM) channels

•Tri-coder/decoder (CODEC) that allows full rate, half rate, and enhanced full rate modes of transmission

•Display animation

•VibraCall® vibrating alert

•5-Way navigation key

•Simplified text entry using iTAP™ predictive text entry

•SIM Toolkit™ Class 2 (STK) (Network, subscription and SIM card or service provider dependent feature. Not available in all areas.)

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