I solved most of the animation problems in iOS 10.2 on my iPhone 7 Plus by doing the following. First off... I was having some frame rate stutters when opening Mail or Safari. I couldn't (at first) figure out why it was happening, but it was happening. However, I changed my wallpaper to something less complex with less detail and BOOM those animation stutters went away immediately... weird right? To test my theory, I tried some other wallpapers (even Apple's own included wallpapers) and the stuttering came back. It's only when I set the wallpaper to something smooth (like a gradient or a blur) that the stuttering went away. Again, the wallpaper only affected Mail and Safari's opening and closing animations and it only happens in 10.2 or later. 1. Set your wallpaper to this: 2. By setting your wallpaper to that image, it also mostly solves the problem of the weird app closing animation that Apple has implemented in the iPhone 7 and 7 Plus models. The animation will appear to be one motion (as opposed to seeing the icons fly in and then the wallpaper move separely). Since this wallpaper is blurred, you don't really notice the extra animation that makes the app close animation look disjointed. Doing these 2 things will make your iPhone a bit more of a joy to use. The blur wallpaper also looks pretty nice and fits well with the rest of the iOS UI. PS: I don't need people telling me that their iPhone doesn't stutter or that I have a faulty iPhone. I know what I see and I've tested this dozens of times. Certain wallpapers cause my iPhone to stutter and that's a fact. Certain wallpapers cause my iPhone to not stutter and that's also a fact.