yeah it really depends on the phone/bluetooth combo. i had nothing but probs wit any bluetooth headset on my iphone, but the moto bionic actually had good bluetooth tech. probably the only thing on that phone that worked right lol
I had the same buzzing on my Plantronics Legend and Droid Maxx 2. I turned off WiFi on my Droid and the buzzing went away ... odd ... it was fine for a while but just started happening - a relatively new phone (2 mos) and new bluetooth.