Apple is looking really ambitious with its iOS operating system. In just three weeks, they managed to rollout three updates one after another - iOS 9 beta, iOS 9.0 and finally iOS 9.0.1.

But if you think Apple has just released for the sake of it then you are wrong. With a mere download size of 35MB/ 43.2MB iOS 9.0.1 offers a huge performance improvement even in the iPhone 4 and iPhone 4C, which are considered as dated.

The iOS 9.0.1 is an OTA update, hence you can upgrade your iPhone easily. It will have a huge impact on your iPhone, iPad and iPod Touch devices. A video feature by EverythingApplePro showed how the update changes the device boot time, performance, benchmark score and even performs faster while surfing the Internet.

Here are the minute details of the performance impact after upgrading the iPhone devices from iOS 9.0 to iOS 9.0.1.

Boot Time

The video shows iOS 9.0.1 running iPhone 5S takes around two second more than an iPhone 5S running on iOS 9.0. However, with iPhone 6 iOS 9.0.1 and iOS 9.0 takes almost similar boot time with a difference of a few milliseconds.


iOS 9.0 running iPhone 5S took a little more time than iOS 9.0.1 , while with iOS 9.0.1 the iPhone 5S loads the app store, maps and web pages a tad better and also offers a dash of smoothness over the iOS 9.0 running device.


With Geekbench benchmarking suite the scores really improved after updating both iPhone 5S and iPhone 6 from iOS 9.0 to iOS 9.0.1. The iOS running iPhone 5S scored 1,399 single-core and 2,519 multi-core, while the iOS 9.0.1 running iPhone 5S scored 1,403 single-core and 2,523 multi-core score.

With iPhone 6, the iOS 9.0 running device managed to achieve 1,615 single core and 2,894 multi core, while the score changed to 1,614 single-core and 2,914 multi-core score.

The score was either identical or a little better in both the devices after the upgrade.