I have been using this Device since the last year It never hang in my hand it was the best Mobile in my life since I have used Its camera is very good i.e. it is 13 MP and the front is 5MP It was very useful for the business men and It has so awesome piece It was most and most better than all the MICROMAX mobiles. Its has 16 gb internal and 3 gb of Ram. It can expand up to 64 GB . I was using the black device of it. It has the most use full FINGER PRINT scenser and it can use by maximum(8) users The main Things is it NEVER HANG.