IOS Versions Comparison


iOS (formerly iPhone OS) is a mobile operating system created and developed by Apple Inc. exclusively for its hardware. It is the operating system that presently powers many of the company’s mobile devices, including the iPhone, iPad, and iPod Touch. It is the second most popular mobile operating system globally after Android.

Originally unveiled in 2007 for the iPhone, iOS has been extended to support other Apple devices such as the iPod Touch (September 2007) and the iPad (January 2010). As of January 2017, Apple’s App Store contains more than 2.2 million iOS applications, 1 million of which are native for iPads. These mobile apps have collectively been downloaded more than 130 billion times.

The iOS user interface is based upon direct manipulation, using multi-touch gestures. Interface control elements consist of sliders, switches, and buttons. Interaction with the OS includes gestures such as swipe, tap, pinch, and reverse pinch, all of which have specific definitions within the context of the iOS operating system and its multi-touch interface. Internal accelerometers are used by some applications to respond to shaking the device (one common result is the undo command) or rotating it in three dimensions (one common result is switching between portrait and landscape mode). Apple has been significantly praised for incorporating thorough accessibility functions into iOS, enabling users with vision and hearing disabilities to properly use its products.



As it’s been a couple of weeks and there are no new features in the pipe, I would imagine we’ll see much faster releases from here out, leading to a late-March public release of iOS 11.3. If things progress as they have previously, we’ll see Public Beta 5 next Tuesday, with Public Beta 6 posting the following weekend.


Like all iOS 11 releases, iOS 11.2.6 is compatible with the iPhone 5S or later, iPad mini 2 or later and 6th generation iPod touch or later.

Apple prompts every compatible iPhone, iPad and iPod touch to install iOS 11.2.6, but if this has not happened for whatever reason the update can be triggered manually by going to Settings > General > Software Update. Apple iOS beta testers, you may have to unroll your device for the update to appear – especially if you are running the major new iOS 11.3 beta (more on this further down).


Despite its odd numbering, iOS 11.2.5 is just like any standard iOS 11 release in that it is compatible with the iPhone 5S or later, iPad mini 2 or later and 6th generation iPod touch or later.

iOS updates vary in size (different features/fixes apply to different devices) but iOS 11.2.5 is larger than your usual ‘minor point’ upgrade (circa 50-100MB) weighing in at up to 178MB. Note: if you’re still running iOS 10 (or even iOS 9), then iOS 11.2.5 will roll up the large iOS 11 updates into a single major upgrade causing it to weigh in at several gigabytes.


iOS 10 incorporates changes to 3D Touch and the lock screen. There are new features to some apps: Messages has additional emojis and third-party apps can extend functionality in iMessage, Maps has a redesigned interface and additional third-party functions, the Home app manages “HomeKit”-enabled accessories, Photos has algorithmic search and categorization of media known as “Memories”, and Siri is compatible with third-party app-specific requests, such as starting workouts apps, sending IMs, requesting the Lyft or Uber apps or to use payment functions.


The iOS 9.3.5 update delivers three security patches that take care of serious security problems that expose calls, contacts, texts, and emails. If you value your privacy, and you should, it would be a good idea to move to the iOS 9.3.5 update right now.


Like all iOS 9.x releases, iOS 9.3.4 is designed for the iPhone 4S or later, iPad 2 or later, iPad mini or later, iPad Pro range and the 5th generation iPod touch or later. Users will be automatically prompted to upgrade, but if that notification has not yet appeared for you it can be triggered manually by going to Settings > General > Software Update


iOS 8 was unveiled at Apple’s Worldwide Developers Conference in June of 2014 and launched to the public on September 17, 2014. The release for existing devices came two days ahead of the launch of the iPhone 6 and 6 Plus.

Improved integration between Apple devices, both mobile and desktop, is a major focal point of both iOS 8 and OS X Yosemite. Apple introduced several new “Continuity” features that are designed to connect the iPhone, iPad, and Mac “like never before.” 




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