http://www.reghardware.co.uk/2006/01...vibetonz_e770/

"Yes, rather than merely vibrate when a call comes through or you achieve a high score in one of the phone's bundled games, the VibeTonz-enabled E770 will drum out a very specific ditty. Users will be able to select different VibeTonz alerts for all their various caller groups, so not only will kids' ridiculously loud ringtones reveal it's their best buddy calling, but they'll be able to 'feel' the identity of the caller even when their phone's tucked in the back pocket of the jeans.

The handset will also shake in subtly different ways whenever an SMS, MMS, email or instant message is received."