Here are two simple but very useful tricks using an iPhone with a U1 chip, iOS 14.4 and an HomePod mini.
Trick #1: set a timer with Siri on your HomePod mini to, let’s say, 10 minutes. Then, bring your iPhone close to the HomePod mini, the iPhone will show how much time is left on the timer (make sure the iPhone screen is on).
Trick #2: let’s say music is playing on your HomePod mini, and that you want to, silently, see what’s playing. Again, bring your iPhone close to the HomePod mini, the iPhone will show the currently playing title.
What a great example of: the whole is bigger than the sum of its parts. This is Apple at it’s best.