HS850 My HS850 will not charge or even come on. When you try to charge it the blue light come on solid for about for about 2 minutes then goes black. When you go to use it, it just stays black and does not sync with my phone.

Are you able to plug it in via ethernet?

You have to start with the boom closed and press the large button with the phone symbol until the blue light comes on, then open the boom before the light goes out and you should be able to pair it with your phone.

close the boom mic , press the button and hold until blue light is solid and with your spare hand flip the boom mic back open and the light should remain on. "0000" is the default passkey

The light is supposed to go off when fully charged.
With the boom closed, press & hold the main button until the blue light comes on (about 3 seconds) then release the button & open the boom. The light stays on, and the bluetooth is now in "pairing" mode. Search for it with your phone. The password is 0000 (zeros).

open the boom (mic) right when it turns to solid blue!
http://www.motorola.com/consumer/v/index.jsp?vgnextoid=4507f7c0c1a0b010VgnVCM1000008206b00aRCRD&ps=y&pg=PG_TYP_00003&show=globalSupport&productID=e4e6e7af976c9010VgnVCM1000008206b00aRCRD

There actually is a trick to the HS850 - flip the boom closed, then hold down the button just until the light holds solid - IMMEDIATELY after it does flip the boom open and this should keep the light solid. Then on your cell/device search for bluetooth devices - you should be able to find it now. Passkey for most devices is 0000.

hold down hook button until blue indicator goes solid blue
(mic FOLDED IN) flip out mic quickly and go to settins on phone and select bluetooth or connections and select find/add bluetooth device and select bond or pair enter passcode 0000.
select done and blue light should now be blinking indicating it was connected

was soooo helpful just make sure u do flip it open immediately after, thats were i messed up... Thk

go to bluetooth on ur phone and select Hs850 delete device. then hold multifunction button until blue then open boom search for new devices from thee cell.

You are not alone in this endeavor. A lot of people have this problem. So, here is what I suggest. 1. Make sure both the headset and the phone are fully charged. 2. Delete the "device" from your phone. I mean precisely that. Go into you cell phone's bluetooth settings and erase your "HS850" from it. 3. Try re-pairing it. Put the phone and the headset in pairing mode and allow it to sync. This should do it. I always works for me. You usually only need to pair once and every time you use the headset all you should have to do is connect it. I hope this works for you. Good Luck.