iOS 15: Find My network can still find your iPhone when it is powered off, or factory reset

Benjamin Mayo, 9to5Mac:

With iOS 15, your iPhone is still traceable through the Find My network even when the device is powered off. It seems that with iOS 15, the phone is not really fully ‘powered off’, it stays in a low-power state and acts like an AirTag, allowing any nearby iOS device to pick up the Bluetooth signal and send back its location.

This also means if your iPhone runs out of battery during the day, you still have a chance of finding its location for several more hours. In fact, Apple says the location tracking will even keep working whilst the phone is reset to factory settings with Activation Lock enabled.

So if someone steals your iPhone and powers it off, or factory resets it, Find My will still work? At least if you get to it before it truly runs out of power?

This seems huge.