iOS 5.0.1 si iOS 9.0.2 installed iPhone 4S and compared in the video below shows how much the design of the iOS operating system has evolved in 4 years, but also how different the performances are.
Naturally, iOS 9.0.2 starts much harder than iOS 5.0.1 pe iPhone 4S, and in the rest of the situations the old version of the operating system runs everything faster than the latest version of iOS, but the difference in performance is not colossal in all cases.
To be completely honest, I would have expected that iPhone 4S with iOS 5.0.1 to humiliate iPhone 4S with iOS 9.0.2, but the situation was not exactly like that in all cases, Apple still managing to keep the performance of the operating system at a relatively high value despite the weak hardware.
What do you think about the performance differences between iOS 5.0.1 and iOS 9.0.2?
