Simple and very short step-by-step video How to use your iPhone and AirPods to spy on people!
Here’s what you need to do to make this work:
open settings and scroll down
select control center
Tap the "+" button next to "Hearing."
Now, take one earphone, hide it, and put the second earphone in your ear.
open control center
select Hearing
turn on Live listen
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00:00 intro
00:30 spy on people with airpods