I currently have the same problem with a customer's 7 plus. Performed a flawless screen replacement only to find that the homebutton is not responding and that the touch screen is erratic in that response to touch is on and off. I have performed many screen replacements and found that these problems are caused by the replacement screen. I am currently awaiting a new one. Did you use heat from a hair blower to loosen the hot glue before removing home button and camera flex from original screen?