On my Droid Turbo, At the end of a call there is a big loud beep. (end of call notification) I need to disable it or turn it down because on headset it is deafening. I had this exact problem on the HTC One M8 and now with the Droid Turbo. My wife's Samsung S5 has an option to disable it and I believe the LG G3 has an option to disable it. IT isn't a problem except on headset or over hands-free in the car. It is intolerable when I have to turn up the phone to hear a caller. Please help soon as my 14 days are running out and I will likely have to trade in this phone Droid Turbo in for the LG. Verizon technical support is no help at all.