As reported by CBC News here some iPhone 6 users are suffering from touch disease. iPhone 6 plus users have reported facing this issue that their screen freezes all of a sudden, starts flickering and they cannot use their device at all, this usually happens after they have dropped their iPhones multiple times. Even some iPhone 6 customers are complaining about it as well. Apple is giving Apple iPhone 6 plus customers a paid solution in the US which is pretty expensive.
Let us know if are one of those unlucky ones who has the same problem as well. In case you are having this problem the best option is to get your LCD touch changed completely. You can book us by clicking here if you are having any of these issues.