bluetooth features work well with some phones and music players but on some phones it wont show the reception barr or the batt bar...... appart from that there's only the standard pioneer faults (ground loop problems, motorized face problems and only ejects the disc 10cm) there common faults with most pioneer decks.
wont play dvd's but, you could spend a few more $$ and get an indash screen for the amount you'd pay for the 9850bt