Ionic 3 is already released which comes with Angular 4 support and many features .
So in this post I'll show you quickly how you can easily upgrade to Ionic 3 and Angular 4 .
i OS did not have an official name until the official release of the i Phone software development kit (i Phone SDK) on March 6, 2008.
You can also check your Settings app to see if there’s a small red alert badge, telling you it’s time to update.With the announcement of i OS 5.0 on June 6, 2011, a USB connection to i Tunes was no longer needed to activate i OS devices; data synchronization can happen automatically and wirelessly through Apple's i Cloud service.Major new i OS releases are announced yearly during the Apple Worldwide Developers Conference (WWDC), and are usually released in September of the same year, usually coinciding with the release of new i Phone models. The most recent beta release for i OS 11, i OS 11 Beta 5, was released on August 7, 2017.In order to fully patch the security bug and no longer be vulnerable, every i Phone user you message with has to have also updated to i OS 9.3.Apple's mobile software updates almost always fix some security bugs, which is one of the reasons why it’s actually really, really important to be using the latest version.