Redmi Note 4 runs on android 4.4.4 and its MIUI OS was good.But MIUI 6 is helpful for chinese because all MIUI apps have only chinese as language option.I would really love Xiaomi to make it more user friendly by adding atleast English to that language option.when I bought this it was the best smartphone at that price I was really excited to use it as it comes with a 5.5 inch screen with 2GB ram and great 13 and 8 MP rear and front cameras.
It all worked fine and is till in good condition even after heavy use.It has decent battery life.It was a wonderful package for 11k except for one thing the single sim slot which I seriously disagree with.Overall worth money but Letv 1s is the best for now if u r looking to buy a new phone its worth that extra money and its for 12k flipkart exclusive