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iOS (formerly iPhone OS is a mobile operating system by Apple Inc.). It is developed. iPhone OS 1 was released for the original iPhone on June 29, 2007.


How to update the system

If you are using iOS or iPadOS 14.5 or later, you may choose between two software versions for the update. Go to Settings > General, then tap Software Update.

If you see that you have two software update options to choose from, please install one.

If you see an alert on an over-the-air update, if you get an alert message while an over-the-air update, how to get device updates out of the way. Go to Settings > General > Software Update.

historic version

1st generation: The iPhone 3G only received two iOS updates, while later ones were supported for six and seven years.

2nd Generation: It was released on September 8, 2010 with iOS 4.1 installed on iPhone 4, iPhone 3GS and iPod Touch 2nd to 4th generation.

3rd Generation: Multitasking The multitasking feature of iOS was first released in June 2010 with the release of iOS 4 Only certain devices iPhone 4 iPhone 3GS iPod Touch 3rd generation are capable of multitasking.

4th Generation: Released September 8, 2010, iOS 4.1 on iPhone 4, iPhone 3GS, and iPod Touch 2nd to 4th generation. 

5th gen: You can now place location anchors in more cities, pin virtual content from App Clips or ARKit apps to print or digital App Clip Codes, take advantage of people in the iPad Pro (5th gen) ultra-wide camera face tracking, and more. 

iOS Design Themes

As an app designer, you have the opportunity to deliver an extraordinary product that tops the App Store charts. To do this, you need to meet high expectations for quality and functionality.

Three main themes separate iOS from other platforms:

clear. Throughout the system, text at all sizes is legible, icons are precise and clear, trim is subtle and appropriate, and a strong focus on functionality inspires the design. Negative space, colors, fonts, graphics, and interface elements subtly highlight important content and convey interactivity. 

respect. Smooth motion and a clear, beautiful interface help people understand and interact with content without competing with it. Content usually fills the entire screen, while translucency and blur usually suggest more. Minimize the use of borders, gradients, and shadows to keep the interface bright and airy, while making sure the content comes first.

depth. Different visual layers and realistic movements convey layers, animate, and promote understanding. Touch and discoverability increase pleasure and allow access to features and other content without losing context. Transitions provide a sense of depth as you browse content.

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