Last month I bought this smartphone.i would say this is the completely mobile with great feature.i prefer this smartphone for its screen resolution and battery back up.
This support every apps like whats app, paytm.it has been use one month I never face any software problem.it has 4 inch long screen.it has also 5 mp main camera with no front camera.that was disappointing.it has Microsoft windows phone 8.1 operating system with 1.2 ghz quad core processor.
You can use it for your choice.its memory capacity is great with 512 MB ram and 4 GB internal.you can expand its external memory up to 128 gb.finally it also great smartphone with low price.i suggest to my friends this Nokia lumia mobile