iPhone 4S with iOS 6.1.3 si iPhone 6S Plus with iOS 9.1 are compared in the video clip below, a Russian trying to show us how well the two smartphones work Apple Lossless Audio CODEC (ALAC), with different versions of the operating system, they being released approximately 4 years apart from each other.
iPhone 4S appeared on the market with iOS 5 from the factory, so iOS 6.1.3 it was offered for him more than a year away from the official launch of the terminal, but even in these conditions, the device works very well, even if it has a jailbreak.
iOS 9.1 was launched for 6S iPhone Plus in October of last year, the Apple company hastened the process of releasing new versions of iOS to solve various operational problems and improve the general performance of the terminals.
The video clip below is old, it is a few months after its publication, but it proves that iPhone 4S with iOS 6.1.3 is not much slower than iPhone 6S Plus with iOS 9.1, on the contrary, the performance differences are not 10x, as the benchmarks suggest.
If Apple allowed the installation of old versions of its operating systems for the iPhone, with users accepting the risks of rigor, then much less people would be upset because of performance problems, this clip fully demonstrates this.
