I bought Xolo Q700S some 8 months back. Within 2 months the picture quality deteriorated then I saw dust from inside the back camera glass.
I went to the service center they cleaned it up and the dust was back within couple of weeks.
Now I dont want to go to the service center as this seems to be a manufacturing defect, Also the volume of the phone is low so most of the times you dont hear the phone ringing mostly with it is on a soft surface like my bed.
Not sure if this makes any sense to Xolo(Lava) guys writing a review here but I wanted to warn the new buyers NOT to waste money on this model, I am not sure about the other Models from Xolo but this one is not good