the first 3 letters stand for marques brownly and the hd on the end of it stands for hige definitionyhis is used so that he he may get a little more subscribers and he used to say it in his video as a jokethis is his banner he uses for his youtube channel because he is trying to overtake apple in subscribers and it show how far away he is.this is used to show that the new iPhone is better than the last generation and get you to click onto the video
