You can now get a look at BT747 for the mobile phone directly on your computer: Mobile BT747 GPS Logger Software demo. Just click 'Back' in the emulator when you get an error message regarding Bluetooth.
You can probably also install it on your phone by entering one of these links: http://soft.bt747.org/J2ME/BT_J2ME.jad or http://soft.bt747.org/J2ME/BT_J2ME.jar .
For other installation methods for the mobile phone, see Mobile (J2ME) Download.