I just purchased the new Moto 4G Plus with it's release this week. It is running 6.0.1. After I answer an inbound call the screen will flash 1-3 times shortly after answering the call. The screen will go black and when it is black I can not activate the speaker function. The catch is that this doesn't happen with all inbound calls, but it does happen from different callers so it's linked to a single number. Rebooting the phone doesn't seem to resolve the issue. Any thoughts? Thanks!