Share your experience!
Were you able to solve your other issue?
http://talk.sonymobile.com/t5/Xperia-Z3-Z3-Dual/Phone-keeps-restarting-for-no-reason/m-p/945134
I'm glad, as for your bluetooth issue, what if you boot on safe mode
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008