Watch The Black Phone (2021) HD Full Movie Free on solarmovie.do. Watch The Black Phone (2021) online free. After being abducted by a child killer and locked in a soundproof basement, a 13-year-old boy starts...After being abducted by a child killer and locked in a soundproof basement, a 13-year-old boy starts receiving calls on a disconnected phone from the killer's previous victims.