I purchased the phone Recently and quite satisfied with the all the features. It works superb and the display is too good with a solid 4" display. It is a very good budget phone which you won’t regret buying. One thing disappointing is the internal memory, which is too less. So if you are looking at downloading big apps for android, which uses higher memory, those apps wont work.
Else everything is good about Micromax Ninja 4.0. Buy it, you won’t be disappointed.
Thanks
Moiz