IOS 15 has been iterated to Beta 8 and is getting closer to the GM semi-official release.
So how optimized is iOS 15? Is it worth it for iOS 14 users to upgrade?
IAB’s latest video compares the performance of six iPhone SE/6S/7/8/XR/11 models in iOS 14.7.1 and iOS 15 Beta 8.
Overall, iOS 14.7.1 generally starts up faster than iOS 15.
On older models before the iPhone 8, iOS 14.7.1 was also faster than iOS 15 to open computation-intensive programs like maps.
The results suggest that iOS 15 optimizations focus on new features rather than performance enhancements and improvements to older models.
Of course, this conclusion is not absolute. First of all, iOS 15 is not fully optimized yet in beta. Secondly, due to the limitation of testing methods, the inspection of running speed is limited to the built-in APP, which is representative to a certain extent, but there are still many scenes not covered.