Chosen Solution
After applying anti-static conductive paste on the iPhones 7 screen it stop working. It looks like it shorts it out or the flex is damaged. Any suggestions ?
If you are getting a green screen during usage (static), leave it unplugged for a while and it will resolve itself. If you are getting purple marks wherever you touch the screen, it is probably a bad quality polariser. If the touch stops working completely, you may have slightly damaged the ribbon or the edge of the digitiser (corner or side may be missing/have small fracture).
