I am geek by heart and I love to do experiments withy device but this device is now my daily driver because this device have one of the most stable customized android os which is miui which is more or less awesome.
It has very gud battery backup as I play some sot of heavy games like asphalt and mordern combact its gives a gameplay of 4 hrs or similler to that which is awesome
Camera is mind blowingingly awesome as compared to other phones in this price backet( not talking abour meziui it is above the standards in camera)
Final verdict
It is the best smartphone of 2015 but in 2016 the competion is now tough and I think mi new weapon which is redmi note 3 can handle it with ease coz I have seen some pictures and benchmarks of note 3 and they were like awesome