Is Final Version Of iOS 10 Worth The Upgrade Over iOS 9.3.5? Find Out In This Speed Test

iOS 10 vs iOS 9.3.x comparison: Is final version of iOS 10 worth the upgrade over iOS 9? Lets find out through this side-by-side speed test comparison.

Weighing in approximately at 1.79GB (file size varies depending on type of device you are using), now that iOS 10 final version is here (well, almost), the standard question that always gets asked is still relevant; how does it perform compared to iOS 9.3.5? Nothing like a good ol’ fashioned speed test to answer that question.


Before we move on, let’s take a moment to address the elephant in the room; that is the version number: iOS 10.0.1. This came as a total surprise to fans and developers alike, but it represents the final version of iOS 10.

The speed test video aims to see how iOS 10.0.1 compares in a head-to-head battle with iOS 9.3.5 on a range of older and modern Apple hardware. For the purposes of this test, the iPhone 5, iPhone 5s, Phone 6, iPhone 6s and iPad Air all are loaded with a fresh install of iOS 9.3.5 and iOS 10.0.1, and are all restored from the same backup. It’s not entirely scientific, but it gives us a good visual understanding of any differences in booting up, and app launch and loading times across both platforms.

Any viewer of previous speed comparison tests of this nature will be used to the familiar looking setup. Place two devices side-by-side, with one running iOS 9.3.5 and the other running iOS 10.0.1, load them up, run some apps, and see which version of iOS is faster to execute the commands. On an iPhone 5, iOS 9.3.5 is a full 4 seconds faster to boot from a cold start than iOS 10.0.1, and surprisingly on an iPhone 5s, iOS 9.3.5 booted up a good 7 seconds faster than iOS 10.0.1.

The same faster boot up process is also evident on the iPhone 6 and 6s tests, albeit with a smaller margin of difference between the two firmware versions. The iPad Air however boots up around 5 seconds faster on iOS 9.3.5 compared to iOS 10.0.1.

From a loading apps perspective, it seems that iOS 9.3.5 is also quicker to invoke those apps and get them in front of the user, albeit only marginally. When apps are loaded into memory, and all content is displayed, interacting with content, such as swiping through weather locations or zooming in and out of maps, seems extremely fluid and responsive on both versions of iOS with no real differences to note.

Check out the comparison in full for yourself in the videos embedded below and see what you think.

iOS 10.0.1 vs iOS 9.3.5 on iPhone 6s

iOS 10.0.1 vs iOS 9.3.5 on iPhone 6

iOS 10.0.1 vs iOS 9.3.5 on iPhone 5s

iOS 10.0.1 vs iOS 9.3.5 on iPhone 5

iOS 10.0.1 vs iOS 9.3.5 on iPad Air

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