This phone was used by me for a few years. it doesnt work very fast in loading but doesnt lag either. the display became spoil for me eventually in just 2 years.
The method of software installation is complicated and it never got updated to android 4.2 jellybean or higher. It has an average camera and a bad battery.
Phone gets hot when talking and playing games. It cannot run all games, some high end games lag a lot. Dont buy this phone in this age. you can get better phones now, some from micromax itself.