Using the Apple Watch, what is the fastest way to adjust the volume of the iPhone?
- When you raise your wrist, the view on the Apple Watch from your wrist, should be the watch face view; not the last view used.
- Audio playing on the iPhone is coming from any iOS app; not just Apple's Music app.
The fastest way I currently know of (by my expectations neither fast nor nimble) is to open the Dock by pressing the Dock button; navigate to the "Now Playing" view with the Digital Crown (having ordered that view near the bottom of the Dock list); and when the "Now Playing" view is active adjust the volume with the Digital Crown.
Unfortunately, "Now Playing" is not a proper watchOS application, and therefore cannot be brought up by double-pressing the Digital Crown, assuming it would've been the last app used.
I'm wondering if there is a quick way to adjust iPhone volume from the Apple Watch, using a keypress combination or something else.
I guess one option could be to tell Siri to "lower volume by 10 %", but I find Siri control quite tedious, and it will interrupt current playback. Issuing a percentage change is ironically also a very discrete action, because it cannot be fine-tuned without having to issue a new voice command.