An iPhone and AirPods can be used to listen to conversations without people knowing. Such iPhone spying is really just a tricky use of the Live Listen feature built into iOS.
And, even if you’re not a budding James Bond, knowing about this trick could keep someone from eavesdropping on you. Here’s what to do if you want to use your iPhone to spy on someone. (Or what to watch out for if you don’t want to fall victim to iPhone spying.)