In the Network appeared videosevennine mobile platforms iOS 9.2.1 and iOS 8.4.1, the purpose of which was to study the optimization of the operation of the OS. Operating system tested on older iPhone models.
Testing was sufficiently detailed, iAppleBytes made a few measurements, including the download speed, application launch, performance in Geekbench. First, the blogger appreciated the download speed. By placing the two next iPhone, he also included the device and measure the result. Summary: iOS 8.4.1 load faster on the iPhone 4s and iPhone 5 but on iPhone 5s iOS leads 9.2.1.
In the second experiment, we tested the responsiveness of applications. Enthusiast opened Weather, App Store, iTunes, Maps and some others. This test clearly demonstrated the superiority of iOS over iOS 9.2.1 8.4.1. In most cases, smartphones on the fresh OS open programs faster than the old one. The difference is immediately apparent on the iPhone 4s.
In Apple claim that the ninth generation OS was created with the expectation of optimization, and, apparently, after four months of development, the company managed to achieve its goals.
9.2.1 iOS vs iOS 8.4.1: iPhone 4s
9.2.1 iOS vs iOS 8.4.1: iPhone 5
9.2.1 iOS vs iOS 8.4.1: iPhone 5s
According to iAppleBytes, new iPhones also work better after installing iOS 9.2.1. And here is a beta version of the next version of iOS 9.3, makes them fairly “slow down”. Although, it is possible that after the final release the problem disappears.