I am on my 3rd iPhone 7+ and I am giving up at this point. I bought this phone strictly for the camera - as I work out in the field taking photos of various jobs. The one I got on launch day was doing this (see video). I did a restore and set it up as new - still did it so I took it to Apple. They swapped it out for a new one - and I set it that one up as new. Definitely didn't want to do that - losing all messages and re downloading apps is never something I enjoy doing. The camera worked for a day or so, then started doing the same thing. I was so fed up at this point I walked into the same Apple Store to show them again - they offered to swap it again. Here I sit with my 3rd phone doing the EXACT same thing. It's obviously a software issue. Guess I'll just want for an update. Sigh....