We put iOS the 12 beta on an iPhone 5S: Here’s what happened

From CNET

The iOS 12 beta has a boatload of features to grab your attention: Memoji, group FaceTime calls and improved notifications.

But one of the most significant changes is performance gains under the hood, especially for older devices like the iPhone 5S.

Apple made some big claims during the WWDC keynote when iOS 12 was first unveiled. Using the example of an iPhone 6 Plus:

  • Apps launch up to 40 percent faster
  • Keyboard comes up 50 percent faster
  • Slide to take a photo is 70 percent faster

On paper, these appear to be big improvements. But the iPhone 6 Plus isn’t even the oldest device that can run iOS 12. That’s the iPhone 5S.

So to see how the newest iOS performs on the oldest phone,…

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