Motorola Confidential Proprietary
3-1Draft 1.0
Theory of Operation
V975/V980 Overview
Motorola V975 and V980 telephones deliver 3G fea-
tures in a smalle and lightweight package. These Global
System for Mobile communications (GSM) General
Packet Radio Service (GPRS) Wireless Application
Protocol (WAP)-enabled mobile phones incorporate
an icon based User Interface (UI) for easier operation,
allows Short Message Service (SMS) text messaging,
Multi-media Messaging Services (MMS), and includes
Personal Information Manager (PIM) functionality. V975
and V980 are tri-band phones that allow roaming within
the GSM 900 MHz, 1800 MHz Digital Cellular Sys-
tem (DCS), the GSM 850 MHz, and PCS 1900 MHz
bands, in addition to the UMTS WCDMA 2100 MHz
band.
V975 and V980 telephones have a clam form factor.
They feature an externally viewable 96 x 80 4K color
STN CLI display for caller identification with date/time,
and an internal 167 x 220 65K TFT color display lo-
cated in the flip. The bottom part of the clam (front
housing) contains the keypad, transceiver printed cir-
cuit board (PCB), microphone, flex connection, exter-
nal accessory connector, smart button, volume buttons,
and voice button. The standard 820 mAh Lithium Ion
(Li Ion) battery fits behind a removable back cover.
The phone accepts both 3V Subscriber Identity Mod-
ule (SIM) cards that fit into the SIM holder under the
battery. The antenna is a fixed stub type antenna. Inex-
pensive direct connection to a computer or handheld
device through USB for data and fax calls, and for syn-
chronizing phonebook entries with Motorola mobile
Phone Tools™ software, can be accomplished using
the optional data cable and soft modem.
V975 and V980 telephones use advanced, self-con-
tained, sealed, custom integrated circuits to perform the
complex functions required for GSM/WCDMA com-
munication.
Features available in this family of telephones include:
• WCDMA 2100 MHz, GSM/GPRS 900/1800/
1900 MHz
• Volume 105 cc
• 176 x 220, 1.9”, 65K TFT color display
• 96 x 80, 1”, 4K color STN CLI display
• VGA image capture w/ 4X zoom and lighting
solution
• CIF camera for video conferencing
• 5 way navigation key
Figure 3-1. V975 Transceiver
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