In the video, a person is using a blue glue gun to repair a cracked phone screen. The person is carefully applying the glue to the edges of the crack and then using the glue gun to heat the glue, which is melting and filling in the cracks. The person is wearing a black shirt and is sitting at a table with a grey cloth. The phone screen is black and the glue gun is blue. The person is using a steady hand to apply the glue and heat it with the glue gun.