As you well know, has Bluetooth, IR, Camera, PDA, and of course phone functions. I have used every one of them: Bluetooth to sync info to Outlook, exchange data with other phones, and to make the phone act as a fax-out, IR to send information to the phone and to make it act as a modem for my PDA (Sharp Zaurus SL5500), and the camera to just randomly snap pics. Syncing info with Outlook is kind of gnarly and twisted but works eventually.