In the last moments of its key note presentation ahead of Mobile World Congress in Barcelona, Xiaomi revealed an intriguing concept. A separate lens unit that attaches to the back of your phone, giving you a proper digital camera experience.
Sony tried something similar with its QX100 and QX10 back in 2013/14 but there are a few features on this idea that could make it even more successful. I got exclusive access to try the Xiaomi Modular Optical System concept and was really impressed with how it works.
