10 Volume Buttons
Under Settings > Sound & Haptics you can toggle “Change with Buttons” on or off.
Everyone has different tastes when it comes to adjusting volume. I don’t like the volume of my ringer to change when pressing the volume button down (I just want it on or off using the ringer switch), but some people like to be able to adjust their ring volume with their system/app volume.
When off, your ringer and alerts will be set to whatever volume you specify directly above the toggle. When toggled on, you can adjust the ringer and alerts using the volume buttons on your device.