https://wccftech.com/ios-11-vs-ios-12-beta-speed-test-on-iphone-5s-iphone-8-video/

Apple claims massive performance improvements in its latest mobile software. Here’s a quick iOS 11 vs. iOS 12 Beta speed test on the iPhone 5s and iPhone 8 to test the claim.

During its iOS 12 announcement yesterday, Apple said that it is going big in terms of performance this time around. In fact, iOS 12 uses several techniques to boost performance to ensure everything is nice and ticking whenever you require it. For instance, whenever you do a taxing routine on your device, iOS 12 will call upon maximum performance from the chip in your phone or tablet where needed so that you get every ounce of performance to keep things snappy.