Lenovo — Lenovo vibe x2 touch issue

Address:	Mumbai City, Maharashtra, 400104
Website:	Lenovo

PFA screenshots of firmware info and screen touch test performed in lenovo companion app.

I am facing this issue from November 2015 after upgrading to s228 firmware of lollipop. Centre of screen touch is not working. Unable to type and also many of the times touch happens automatically even if no one is touching the screen ( centre of screen at dialpad no. 2).

I want to know what is the exact issue ( is this a software issue or hardware issue?).

If software issue then will it be solved in a new update or if I downgrage to kitkat??

If hardware issue then I think it is problem with lcd screen digitizer ( but I dont think so many user can be affected with same hardware problem.)

Whatever the issue but please solve this asap as it is very disappointing issue for such a good phone.