Micromax canvas spark 3 is nice smartphone but it is not 4g.it has 1gb of ram and 8gb of internal memory. It has 2500mah of battery. It has 1.3 ghz of processor. it didn’t pendrive supported.it is very slim and nice looking smartphone.it is very thin and strong. It has grip. It has 8 megapixel back and 5 megapixel front canera. It is good phone in price of 5000.