Hs850 how do i use it

is on the Motorola webpage.
check there

http://www.motorola.com/staticfiles/Support/Mobile%20Phones%20Accessories/HS850/US-EN/_Documents/Static%20Files/HS850_UG.pdf

0000

I bought one here - I'll let you know if it works

https://www.eglobalwireless.com/p-3052-motorola-hs850-replacement-ear-hook.aspx

How to pair a Motorola HS850 bluetooth headset How to place a Motorola HS 850 bluetooth headset into paring mode:

1. Close the boom to turn the unit off.
2. Hold down the call button until the blue light comes on.
3. While holding down the call button, swing the boom open.

The headset is now in pairing mode, and you can search for it using your phone. When it asks for a PIN, use 0000.

Good Day,

Passcode is "0000"

Hope this helps

I'm new to this site so I can only see your "I'm having the same problem" so I'll tell you what I know and hope that it answers what the question was.
Make sure your hs850 is charged. Close the boom, hold the multifunction button until the light turns on and open the boom while holding the button--then let go. if the light stays on you're in business, turn on the blue tooth setting of your phone on and search for new devices. then hit connect! ta-da!

make sure the ac adapter isnt bad

Device is not bad blackberry has a compatibilty issue with this headset try plantronics brand go to www.n1wireless.com

try 0000

no u need to take it to phone manufactuer