Why does it seem like every technology "upgrade" makes things less user-friendly? With Android 9, they broke a very important feature - turning the main volume control all the way down so the phone will be silent and only vibrate. This feature was used very frequently when users went into meetings or other settings where the phone not making sounds was important. In Android 9, they took away most of the power of that setting and it now only works on incoming calls and not on the other sounds (like notifications) phones make. So now you have to turn your phone completely off or work with the Do Not Disturb feature which is not user-friendly. The default settings for it belie its name, because they allow for all sorts of disturbances so you have to spend time to reconfigure it to actually be what its name says it is. And it is hard to access since it isn't on the main Settings screen. I don't think they tested Android 9 in real life before they sent it out.