None of this is to say that jerkiness is entirely banished from the iPhone 4-all you have to do is open the Settings app and scroll around to see how true that is (try scrolling through the wallpaper selection to see it at its worst). Music credit: "Show Your Moves" by Kevin MacLeod. IOS 7.1 makes the iPhone 4 visibly faster and smoother. It's easiest to capture the difference in video-actions like launching apps or pulling up the Control Center shade are always visibly jerky in iOS 7.0, but they're smooth (or at least smoother) in the new update. IOS 7.1 also helps with the UI jerkiness that was all over the place in 7.0. The small speed improvements are present throughout the operating system, and this makes the iPhone 4 feel more responsive than it did, if not always as responsive as it once was. It's not a complete recovery from the original iOS 7.0 release, but it's about as good as Apple can do with hardware this old.
In a few instances, iOS 7.1 very nearly catches up with iOS 6.1.3, which is impressive given the gap between the two operating systems in some of these apps. There's a measurable improvement over iOS 7.0 across all of these apps, some more noticeable than others. The apps were force-quit using the iOS multitasking interface between runs. Each app's launch time was measured three times and averaged. The numbers below measure the time between when the app icon is tapped and when the app becomes ready for user input. To show how this speeds up even the slowest of Apple's phones, we re-ran our application launch tests under iOS 7.1 and compared them to the results from iOS 6.1.3 and 7.0.
Animation durations have been shortened noticeably throughout iOS 7.1, and toggling "reduce motion" is now purely cosmetic. IOS 7.1 solves the problem for people who don't tweak their devices' settings or for people who like the way the animations look but not how they feel. In its place was a crossfade effect that was less flashy but also demonstrably faster. Going into the Accessibility Options and toggling "reduce motion" originally just disabled the parallax effect used on the home screen and throughout the operating system, but version 7.0.3 also disabled the sweeping animations used to transition from app to app. IOS 7.0.3 was a first step toward fixing this problem for people who knew which settings to tweak. Even worse, you usually had to wait for these animations to complete before you could do anything else, which sometimes made iOS 7 feel less responsive than previous versions had been. These animations could sometimes double the amount of time it took to launch common apps on the iPhone 4 compared to iOS 6.1.3 running on the same hardware. This was true whether you were using an old iPhone 4 or a brand-new iPhone 5S freshly liberated from its packaging. The worst speed-sapping problem that afflicted iOS 7 was its flashy, overlong UI animations, which were sometimes used to cover up application load times but more often added unnecessary seconds to the amount of time it took to do anything. Luckily, there are plenty of things Apple can do to speed up iOS 7.1 that won't show up in benchmarks.
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These include translucency effects throughout the OS, live wallpapers, and the parallax effect used on the Home screenĪside from these items, the general UI tweaks introduced by iOS 7.1 are all present on the iPhone 4-we'll go into more detail in our full review ( coming soon). A number of the new graphical effects present on all other iOS 7 devices.Panorama mode or Filters in the Camera app (filters can still be applied after the fact in the Photos app).3D Flyover or turn-by-turn navigation in Maps.You're also missing the same iOS 7 features that you didn't get in the 7.0 release, a list which we'll reprint here for your convenience alongside all of the iOS 5 and iOS 6 features the iPhone 4 didn't get.
Apple sometimes takes these medium-sized updates as an opportunity to further optimize Mobile Safari's JavaScript engine, but that's not the case here. IOS 7.1 doesn't perform any differently in CPU, GPU, or browser-based benchmarks than iOS 7.0.
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While there's only so much Apple can do to optimize its software for old hardware, we hoped it would improve the iPhone 4's performance enough to make things pleasant for people squeezing another year out of their phones. IOS 7.1 is the new operating system's first major update. It just isn't well-suited to iOS 7's big, sweeping animations and other graphical effects, and its jerky performance is worlds away from what you'd get on a new iPhone 5S, 5C, or even the one-year-newer 4S. The Apple A4 that powers the phone is now nearly four years old, and you can feel it from the moment you turn the phone on. We weren't impressed by iOS 7 on the iPhone 4.
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