GridWaveFist

Solves the brief's actual instruction, three days of silence against a falling crash line, with one object: a red cable runs diagonally across three dead phone screens, unplugged at three points, so the severed connection and the falling line are the same drawn thing and the three breaks count the three days. Five labels, the zero-deaths fact carried, the correlation-not-a-controlled-study caveat printed in full. Survives 3x inspection. No phone-brand mark.