It is one of the very good produ t fro. Xiomi company and the camera n sound quality is very good , user friendly mobile and smooth working, it has unique design thin and light weight and ir is very offordable for the all catogery of customers , I like this mobile and its bottery it quite good compared to other company, its camera quality is very good compared to all other mobiles but I dont know whether this product works good in furure also the battery is inbuilt and thank you for releasing this kind of mobile in market