The NEM-4 (Nokia N-Gage) is a Mobile Game Deck with telephone for EGSM900 and GSM1800/GSM1900 networks. It features large, high resolution, active matrix colour display (176 x 208 pixels) with 4096 colours; separate application key, music and radio shortcut keys; and 5-way rocker. The following file contains detail circuit diagram and schematics of Nokia N-Gage series which covers:
"Connections between RF and BB modules, NEM-4 BB, UPP_WD2 NEM-4, power circuit, NEM-4 AUX Power, UEM, Audio, ADSP and FLASH, FM Radio and Audio Codec, Memories, User Interface, keypad, Card and USB Interface, Accessory Interface, System Connector, LPRF BT102, Test Interface, GSM BB-RF Interface, Connectors Between RF Modules, Power Amplifier, Mjoelner, Testpoints, Component Placement Diagram Bottom, Component Placement Diagram Top."
Get more information about Nokia N-Gage Circuit Diagram and Schematics here – free download 1.4MB PDF file manual. (source: wandrew.regruppa.ru)