Why it worked
The video likely performed well due to its shocking and unexpected nature, combining a common problem (broken phone) with a dangerous and unusual "solution" (fire). The exaggerated reactions and the visual of a phone being set on fire create a strong, attention-grabbing hook.
Summary
The video shows a person holding a phone with a cracked screen and a lighter, appearing to set the phone on fire. The person then reacts with exaggerated surprise and fear. The video is presented as a "hack" or experiment.