I personally use this device.
This is the good phone. Features of this phone is affordable in this price.
Its has Snapdragon processor of 625 which is letest and good one.
Also camera and camera features are very good. And also provide a 4 tone led light so you can take a picture in even low light also.
MI phone has there own UI MIUI. They regularly provide updates related this UI. And after every update phone will keep working smooth which is very desirable and good this is why I like these UI.
This is a my phone contention inbuilt features like screen recording, QR Scanner, Document Scanner. In calculator there is some extra features are also available there.
Over all I can say that this phone is good and also this phone its in budget to buy.