回答“Initial screen with logo blinks sometimes with red screen appearing”Its usually caused by the front facing camera but since you’ve already replaced the screen with all new parts, I would’t spend anymore money on it as this would be a software issue.
回答“After screen replacement, proximity sensor is not functioning.”Having the same issue. It seems like it is a common problem. You'd think by replacing thr FFC that would solve the it.. I replaced the front facing camera on two different i7+ and still the proximity sensor does not work! Very frustrating!