Mi4i is a good device when I use it. The look of the device is great & the best thing in this is screen clearity with 175 pixel per cm. 1080 p full hd display. It have second generation 64 bit 615 octacore snapdragon processor with 2gb of ram. Gives good processing. It support openGL ES 3.0, the latest standard in 3D gaming. Camera of this device is excellent gives good clearity images even in low lighting conditions. And it have 3120 mah battery with good battery backup. So totally it a great device when I use it.