Use your Symbian OS mobiles to control devices through Bluetooth.
The serial to Bluetooth converter from sparkfun.com is used in this project.
The Microcontroller At89C2051 is used to receive the data from the mobile through bluetooth.
Most of the Nokia smartphones can be used in this project.
Symbian OS II Edition Nokia Phone models:
Nokia 6600, 3230, 6260, 6620, 6670, 7610, 6630, 6680/6681, N70, N72, N90
(Soon i will add Mobile software for III Edition Nokia Phones.)