The iPhone 8 Challenge

The iPhone 8 Challenge is a video uploaded to YouTube made by popular YouTuber TechSmartt on July 31st, 2017.

Video
The video is full length extended version, but at 5:11 is only to be suddenly interrupted by a picture of Regan MacNeil from The Exorcist pops up along with the same scream sound effect used one of from Winterrowd games and The Maze, and after about that beginning Thursday between 12:25 and 10:13 P.M, Regan MacNeil flashes yet with a another scream between out of time at 5:13 & 5:53.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=dpm-Nokk-jM