If the problem persists even after installing a working/tested screen, then the problem is with the motherboard. You will have to check the ground resistance of the touch connector and compare it with another iPhone X or in ZXW software, trace out missing/short connections and fix the problem.
Hi Markus,
If the problem persists even after installing a working/tested screen, then the problem is with the motherboard. You will have to check the ground resistance of the touch connector and compare it with another iPhone X or in ZXW software, trace out missing/short connections and fix the problem.
BR
Francis