Hello frnds, I have the xiaomi mi3 mobile phone. And it is the best 3g smart phone I have ever used. The smart phone having quad core processor with qualcom snapdragon 800 runs very fast. The phone comes with 4.3 jellybean OS and upgradable also. This smart phone have 13 megapixle cam in back and a 2 MP cam in front. The camera quality is very good in day time compared to night. The front cam quality is also good, it is not feel like 2 MP cam, Its like 5 or 8 MP cam on front. The battery back up is awesome. With Its 3050 mah battery, it can last upto 2 days. And Its amazing for a smart phone. The sleek degin also looks beautiful and back panel feels smooth and holds a better grip also. I loved the phone.