This is latest smartphone from mi launched in january 2017 in india I am recently used redmi note 4 this phone has great display quality looks more hd and fantastic battery backup of 4100mah this smartphone running on miui 8 of android nougat version this smartphone comes with special edition colour of full black mettalic body which looks great also comes with strong cpu qualcom snapdragon 625 proccessor and 4 gb of ram with 64gb of internal storage you can also expend external storage with 128gb of sd card