Phone pinout could be found on www.cpkb.org.
Gnokii provides tools and a user space driver for use with mobile phones under various operating systems.
Gammu provides tools and a user space driver for use with mobile phones under various operating systems.
Nokia battery hack
FBUS & MBUS
Nokia F-Bus Protocol
NuukiaWorld project: FBUS & MBUS adapters
Nokia Fbus Version 01
Connecting Microcontrollers to Nokia 3310