It’s common to have the “wrong” Siri answer. You can ask your Apple Watch to set an alarm, for instance, and find that it’s your HomePod that does it. Here’s how to make sure that Siri is listening to you on the device you intended.
Every time you say the words, “Hey, Siri,” a most remarkable thing is supposed to happen. Your Apple Watch, your iPad, your HomePod, and your iPhone, all look at each other and privately go “who, me?”