My phone was working just fine (and really fast) after receiving the nougat update. I always leave the ringer on vibrate only most of the time. Yesterday I turned up the ringer volume as I was working outside and when I went to turn it back down to vibrate, the ringer won't go below the lowest audible ring setting. Silent and priority seem to be working fine as well as the slider, but I just can't set the phone to vibrate. Any thought?