I bought this phone for my brother on his birthday!
Its been 2 months and not even a single complain so far, I used this phone for approx 12-13 days. I am a app developer, so anyone can guess how messy I could be with the gadgets that I owe. I used phone like anything and then I handed over to my brother(Because, no one wants to hear grumbling from the background always!). I used all the applications which I could, I played games like Asphalt 8, N.O.V.A., Dead trigger 2 and many more. Though this phone starts heating after playing high end games for more than 30-40 minutes, but that heat is bearable. Its somewhere between 38 - 40(As I measured). No lags whatsoever. Batter is ridiculously AWESOME.
After using the phone a lot, for videos, internet, games, and much more, you can use it for 1 day. If you are not a power user then the battery will last for 1 and half day for you. This phone comes with 2GB RAM and that is the backbone of this performer. Storage is not a problem, you get 16GB of ROM and you get 11GB approximately out of that. Call quality is good and the weight of the phone is also good. Camera is amazing, specially in low lighting. The phone also comes with Ultra-Power Saving mode and if you are roaming around and running out of battery, you can simply turn this feature on. It will stop unnecessary background tasks and 15% battery of the phone can last for more than 5-6 hours because of this feature. Really, value for money device, go for it!:)