Love the iPhone 7, had it three days now. Went for a little night walk to test the video camera in the city lights and I noticed a little bouncing light, probably just reflection when there was a street light or something but it kind of bounced around and followed me I never noticed it on the screen when I was filming when I made a Periscope video. But during replay it was noticeable.
Not too worried about it but I'm wondering if anyone else is ever noticed this. I have the 4.7 inch iPhone 7.
It wasn't always in the bottom left corner it sometimes went to the centre and jumped up and down.