Huawei's patent for virtual buttons for side cameras means that there are many virtual buttons for camera control on the side of the mobile phone, including icons (+and-) for adjusting parameters, flashing light, filter selection and white balance setting. In addition, a conversion icon is added, which can switch between the front and rear camera lenses, and the last icon is the shutter button. There is a similar scheme, with a parameter setting icon (+and-) at the beginning, except that the control part becomes HDR, flash, white balance and gallery icon. It can be said that Huawei's patent transferred most of the operation buttons of the original mobile phone to the side of the screen, while the front of the screen remained pure to a greater extent.