my Nexus S does strange things when I try to use apps which use bluetooth.
For example I wanted to use a presentation app which needs an app on my phone and an additional software on my pc. When I connect both via wlan everything works just fine. When trying the same with bluetooth, it shows a "cannot connect to device" infobox on the Nexus for the split of a second and performs a hot reboot.
It makes no difference whether I pair the devices first or try to do this within the app.
This happens with other bluetooth apps, too. Normal file transfer from one smartphone to another or a pc works fine!
Android Version: 4.1.2
phone is rooted