Is the back cover of iphone 12 as flat as the frame?
No, the back cover and frame of iPhone 12 are not completely flat. The back cover of iPhone 12 is made of glass and the frame is made of aluminum. Although the frame and the back cover are connected together to form a whole, there are still subtle differences between them. This is due to different manufacturing materials and some factors in the assembly process. Therefore, you may observe some slight changes or incomplete flatness between the frame and the back cover.