I purchased this tab from "XOLO india". My tab is having some vertical lines on the screen. These are not visible when directly viewing, if you view the screen through an angle then these lines are visible. When I asked the sales person at the shop, he told me that these vertical lines are present if gorilla glass is there. Similar vertical lines were also present on the nexus 7(2013) and a tab of "iball, a local company".
I am asking this question because I don't want to put the screen protector.