When I heard that google had built android one device of four company of lava, micromax, karbon and spice. Then I decided to buy one of thsm . And after 6 month of launch I baught spice dream uno mi 498.
It is good phone . Its battery backup is good standby time is about 2 days . Ad on screen time in 2g is about 5 hours and in 3g about 3 hours.
In 3g network you will face some heating problem and battery draining problem also but in 2g it will work normal