Here is yet another interesting & fun Cydia application for jailbroken iPhone’s. iBlueTooth Call is an cydia app which lets you to have nice voice two way voice chat with your friends over Bluetooth, it supports iOS 3.0 and above firmware and requires Bluetooth and built in mic. For iPod Touch 2G and lower you will need a headset with a mic connected to use this app at its full potential.
iBlueTooth Call Cydia App in Action
You can download iBluetooth Call cydia app from bigboss repo.