Here is the specs
3gb ram 32 internal memory which gives you around 1.8 gb to use and the rest of ram used to operate the os
1.4 ghz octa core . Fingerprint scanner
Dual sim and hybrid sim slot if you use memory card you only use one sim that time .
4050mah battery that gives you more than 16hours backup .i personally used
13mega pixel rear camera and 5mp front camera is decent but in the price coloum gives you best quality .
5inch hd 1280 x 720 pixel screen resolution .
Pros
Built quality is good
Camera is decent
Gaming performance nice
Battery life good
Cons
Mi sales is worst sometimes you have to wait more than a week to get the device
When you start using this phone sometimes it show heating issues but when you complaint on that you will get a update and after update the system the phone heating problem get solved .
Service center is not good but better than micromax