Since I am using from four months this device was awesome in its stand by the battery was out standing performance.it is simply superb that it can easily fit in pocket that it was small and curved edges and smooth finishing body, the sound of the speaker was some what less but it is good in clearence the noise cancallation was best, coming to camera it was best in class both the cameras was fully loaded with good features, its miui was simply super and it was user friendly os xioami is giving updated verisions, the main disadvantage is hybird sim slot, the adreno graphics, thank you.