Just a little tip off here. Most people thinking that bluejaking/ bluesnarfing can only be done by people/ devices close by. But this is not absolutely true. For most people, usuing normal bluetooth devices/laptops, this rule stands. But all you need is a simple antenna and a class 1 toggle and you can bluesnarf anyone's phone up to a mile away, depending on terrain.
THis means that anyone can eseentially use your phone to make long distance calls, from up to a mile away, without any of your knowledge. Austrian researcher and Bluetooth expert Martin Herfurt did just that in an experiment in 2004