The karbon says that the Virat 4G what is 4G it give you much speed of internet as they say. I use it and I even not het more than 1 MBBS speed I hate it. Camera performce of the karbon is worst and pixels are too much small. When I zoom picture it does not give clear and smooth picture and ram is not much used. I think karbon does not underhand the meaning of 4g that does not know actual speed of 4g . 4g will give you more than 10 mbbs speed and karbon give you 1mbbs.
What is it. I personally suggest you to dont buy it.