My friend bought xiaomi mi 4i 5 months ago for 13000 INR. I also used this phone for about a month.The first thing I would day that its a very good phone.
The design of the phone is very good and is very lightweight which makes it very easy to hold in hands. The best thing I like about this phone is its camera and screen quality. The rear 13MP camera captures very good pictures. The front camera is also good. The 3GB ram provides a very smooth experience.
The 3120mah battery gives a good backup. The phone comes with 16GB internal memory with no SD card support which is a big con from but side.Also the default launcher is very dull and boring. The all plastic body makes it look like a cheap mobile. Overall I will say that the phone is a good buy at this price