After upgrading a smartphone`s OS, Joe, a user, reports the smartphone no longer connects to his automobile automatically when near it. Joe restarts the smartphone, but the problem persists. Which of the following should a technician do NEXT to restore the previous functionality? 

Answer options:

A. Connect the smartphone to the automobile via USB
B. Reenable the smartphone`s Bluetooth radio
C. Perform a rollback of the smartphone`s OS
D. Enable airplane mode and then disable airplane mode

B