Taking a photo on your smartphone is different than on a regular camera as the aspect ratio, the relationship between the length and width of a photo, is not the same. Smartphone cameras are not best for portrait or vertical orientations. For example, a point-and-shoot camera uses an aspect ratio of 3:2 or 4:3, while a smartphone camera uses a widescreen ratio of 16:9.
People find it annoying! The problem extends beyond bad listing photos but to video home tours as well. Vertical Video Syndrome is a fictitious condition caused by watching online videos shot on smartphones in a vertical orientation. Simply put, your smartphone camera was designed to shoot photos and videos horizontally (also known as landscape) in widescreen or letterbox format.