Speed Test Compares iOS 5 Through iOS 9 on an iPhone 4S [VIDEO]

If you’re still holding onto an iPhone 4S, here’s how the aging device runs clean installs of iOS 5 all the way through to iOS 9, as painstakingly recorded by YouTube channel EverythingApplePro.

Screenshot 2016 02 25 11 37 34

The devices goes through a boot up test, tests the app switcher, Spotlight search, Siri, app launch speeds and more:

The iPhone 4S was launched back in the fall of 2011 and nearly 4.5 years later, it still supports the latest version of iOS.

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  • SOB

    I understand the point of the video but I don’t think there would be a lot of people with a 4s these days. It would have been interesting to have an iPhone 6 running the latest IOS in this video as a comparison.

  • awkpain

    It would likely be the same to a lesser extent. 4S was probably used to really highlight the difference.

  • SOB

    Understood. iOS 9 might be slower on a fancy iPhone 6 but not that much slower. Hope they do focus on improving the overall speed at some point.