I have used micromax canavas spark for about an year and my experience about the fone is nice as the device is value for money.
Such a device at this price is an excellent combination. This budget phone is never harsh on your pocket but heavy duty.
This phone comes with android lollipop out of the box. You get 1 gb of ram and a quad core processor to do all your heavy work. It gives you a experience of holding a beast in your hand. It have a manufacturer warranty of an year. I have used this device and recommend you all if you are searching for a budget beast