I think Lava xolo Q600s is wastage of money it has many problems like heating problem , it lags a lot and its battery is also not good we have to charge the phone atleast 2 to 3 times a day for those who uses lot of time in operating mobiles.
It comes with 1gb ram 2000mah battery 1.2 ghz quadcore processor only 4 gb inbuilt space no 4g support and front camara is only 0.3 megapixal its a comedy and no hd display in 4999₹
If you are going to buy a low budget smartphone then only add 1000₹ more and buy redmi 4A which has all the specifications much more than this mobile.