Hellow guys, I am using mi4 from last 4 months and find no problem regarding it. It is one of the best buget fitness watch that provides both style and healthcare to you in just 2200inr. That is a quite good price range . It has full touch screen. Display is ok not very big but with coloured wallpaperd that are available in its official store. I suggest you to apply a screen guard in it because I face some scrtch issue with its display. Its battery life is quite improved from mi3 and its silicon band is also very comfortable. I accomplish its stablity and accuracy in detecting steps and heartrate . I prefer this watch because it is full of features in just under 2200 inr and so go and purchase it now.????