Originally Posted by Optimus Prune
Others have posted of issues with their screen going black and it has turned out to be a screen protector interfering with the proximity sensor, yes. But the other case that comes to mind was a guy who was cutting a different template to fix the Maxx and it just wasn't the right fit.
It's weird... Sometimes it's fine, others it gets all crazy. I trimmed the case and it seems better, but not totally fixed...