It is best mobile in that price range but still has many cons like low light uncapability of camera etc.
Good processor and chipset
Good battery life
No lag while gaming
Outdoor camera
Metal design
f.p sensor
hybrid slot
low light camera failure
I used MI3 for about 2 years and I can say mi gives the best hardware quality. I bought about 3pcs of Mi3 and 10 pcs of redmi2prime also some mi4i. within 2 years so I can say its better then other brand. Samsung gives NOTHING at this price. Only after 1 year you can see the actual performance of Samsung and MI.