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Hello, i have a problem with my iPhone 7 Plus. My display start tapping and typing itself after 2,3min of use. Has anyone know what is problem? i opened a phone, reconect cables and put a tape under metal lcd bracket but nothing changed. Display has a apple logo on it.

You most likely have a bad or damaged digitizer on your hands. You’ll need to replace the screen.

Ghosting is almost always the screen or bend/crease in the flex cables. In iPhone 7, the touch chips are in the screen itself. All the board does is provide power to those chips through the connector.