Malachi Hemphill was playing with a handgun and talking to friends over the video, accidentally discharged the weapon while loading the bullets.
Malachi Hemphill who lives in Georgia was playing with a handgun and talking to friends over the video.
It is reported that another teenager who was also watching the video asked the deceased why his firearm was not loaded and urged him to put in ammunition.
He accidentally discharged the weapon while loading the bullets.
The mother of the deceased Shaniqua Stephens said she and her daughter forced the door of Malachi's bedroom open after hearing a bang and found him lying lifeless on the floor.
“We kicked in the door. We found him just lying there in a pool of blood," she told the local 11 Alive television station in Georgia.
"He was my only son," she added. "He was just only 13. Just the thought of me seeing him on the floor will never leave my brain."
She added that the phone was still streaming video when they entered the room.
Mrs Stephens said she did not know her son had a gun.
Meanwhile, Police in Georgia has started investigating the incident.
Malachi's family are now urging other families to keep a close watch on their children in order to prevent such incidents from happening.