I have an iPhone 6+ 64gb running iOS 8.3 and lately I've been receiving invisible notifications on my lock screen. My phone will be sitting next to me with the screen off when all of the sudden the screen turns on but there are no new notification. The screen automatically turns off after about 10 seconds like normal. I notice this happens a couple times a day but it probably happens when it is in my pocket as well. I've looked everywhere but don't see any new notifications or anything that could be the source. Any ideas of what could be causing this???