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JANA Partners and CalSTRS issued a second letter to express their support for the new feature. In June 2018, after the announcement of the Screen Time feature, Tim Cook publicly admitted that he "was spending a lot more time than should" on his phone. In January 2018, investors JANA Partners and the California State Teachers' Retirement System had issued a public letter to Apple, calling for them to take additional responsibility for the "unintentional negative consequences" that iPhones may have on younger users, and to seek out new ways to limit these effects. Without setting a passcode, the limits can easily be bypassed but may serve as a useful reminder of usage goals. These features can be used with or without a passcode. It replaces Restrictions in the iOS Settings app, but can also be used by adults to limit their own usage. Screen Time also provides blocking features to limit usage of apps (with time limits) or set other restrictions such as on purchases or explicit content. The feature also displays the amount of time the user used particular apps, the amount of time the user used particular categories of apps (such as games), and the number of notifications the user received. Screen Time is a new feature in iOS 12 that records the amount of time a user spent on the device.
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The Screen Time usage information screen in iOS 12 on an iPhone X Tests done by Apple on an iPhone 6 Plus showed apps launching 40% faster, the system keyboard activating 50% faster, and the camera opening 70% faster compared to iOS 11. Performance optimizations were made in order to speed up common tasks across all supported iOS devices. The initial release of version 12.0 was on September 17, 2018.
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The first developer beta version was released after the keynote presentation, with the first public beta released on June 25, 2018. IOS 12 was introduced by Craig Federighi at the Apple Worldwide Developers Conference keynote address on June 4, 2018. The latest update, 12.5.7, was released on January 23, 2023. Security updates for iOS 12 have continued for four years following the release of iOS 13 for devices unable to run the newer operating system. It was succeeded for the iPhone and iPod Touch by iOS 13 on Septemand for the iPad by iPadOS 13 on September 24, 2019. Announced at the company's Worldwide Developers Conference on June 4, 2018, iOS 12 was released to the public on September 17, 2018. Aesthetically similar to its predecessor, iOS 11, it focuses more on performance than on new features, quality improvements and security updates. IOS 12 is the twelfth major release of the iOS mobile operating system developed by Apple Inc. Supported, widespread third party app support IOS 12 - Apple at the Wayback Machine (archived September 9, 2019) Proprietary software with open-source components
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