LG has filed a patent that describes potential features of future smartphones, including an array of 16 cameras. What's interesting about them (other than the number) is that they will not lie flat on the back. The company envisions a 4 x 4 array of cameras arranged at an angle (making the array concave or convex). This way each camera sees the scene from a different angle. A photo can then be stitched from the image taken by several cameras. A mirror below the camera for selfies The 4 x 4 camera array will be concave or convex An example given in the patent is...
Source: https://www.gsmarena.com/lg_patents_a_phone_with_16_cameras_and_the_software_to_use_them-news-34395.php