How to adjust iPhone’s volume when playing music by using my watch?
When I’m listening to music through my iphone (connected to AirPods), how can I adjust the volume through my watch using that round button?
Hi
watchOS 4.x includes the Now Playing app.
When you are playing supported audio on your iPhone (whether via the Music app or a third-party app), Now Playing is shown automatically in the Dock on your Apple Watch and can be used to control playback on your iPhone, including volume by turning the Digital Crown.
If desired, Now Playing can be added to the Dock permanently and/or added to a watch face as a complication.
Follow the instructions here: