k750i/w800i bluejacking/bluesnarfing

[k750dh]

i use bt info but it requires pairing!

[xepmec]

i use bt info but it requires pairing!

You have a wrong phone do entertain youreself with bluejack :)
As all Java apps are not sofisticated enough to utilize all possible protocols that can be involved in such sport:)

As for it is ilegal activity - I will not advise which phones or operating systems to use but if you search a bit you will find it for youreself ;)