I was just doing a test of vibrate mode on my HTC 10 in response to another members concern when I made this strange discovery.I just found out that if you have your phone connected to a Bluetooth speaker then turn your phones volume all the way down to vibrate you'll still here a ring through the Bluetooth speaker. The truly weird thing about this is that it's just a regular ringing sound not the ringtone I have set on my phone. As a matter of fact that just ringing option is nowhere in the list of ringtones I can apply to this phone. Does anyone know where I can download a just plain old fashioned ringing phone ringtone and has anyone else experienced this?