The Apple Watch can not only help you find a lost or stolen iPhone, but also track the missing device if it's hidden nearby.

For such times there's Find My iPhone, a free app from Apple that instantly locates any iPhone, iPad, iPod Touch or Mac that can take steps to help you find or disable it or to erase its data.

The Find My app on iPhone and iPad is an essential tool for managing your devices, tracking personal items, and securely sharing your location. Fully integrated into Apple’s ecosystem, it ...