iOS 4 is the final version of iOS that features the iPod app for music and videos on iPhones and iPads. Starting with iOS 5, iPhones and iPads do not have the iPod app, but instead have the Music and Videos apps, as the iPod Touch does.

Download current and previous versions of Apple's iOS, iPadOS, watchOS, tvOS, audioOS and macOS firmware and receive notifications when new firmwares are released.

[1] iPhone OS was renamed iOS following the release of the iPad, starting with iOS 4. [2] . With iOS 13, Apple began offering a separate operating system, iPadOS, for the iPad. iOS is also the foundation of the newer audioOS and tvOS, and shares some of its code with macOS. New iOS versions are released yearly, alongside new iPhone models.

2025年3月16日 · iOS 4 (codenamed Apex) is the fourth version of iOS that was released on 21 June 2010. It was first announced at the Apple Special Event on 8 April 2010. It is the first iOS version issued under the "iOS" rebranding, dropping the "iPhone OS" naming convention of previous versions due to the introduction of the iPad.

2010年9月8日 · Overall, iOS 4.1 is a worthy update that packs both new capabilities as well as improvements to existing features—and all for free, too. With the performance improvements, even iPhone 3G users ...

iOS 4是 苹果公司 在2010年6月22日发布的操作系统 [1]。 iOS 4提供包括多任务在内的100项新功能，除了可以一次性运行多款应用外，该系统还允许用户通过文件夹来整理应用 [2]。 2011年7月26日，iOS 4的版本升级到4.3.5 [9]。 2010年6月22日，苹果公司发布iOS 4 [1]，并正式面向普通用户提供下载 [3]。 在 iOS4 系统上，用户可以同时运行多个 第三方应用程序， 并在它们之间迅速切换，不会让前台应用程序变慢，或不必要地消耗过多电量 [4]。 iOS4支持五倍数字变焦、支 …

2010年9月14日 · iOS 4.1 的 HDR 功能仅能工作于 iPhone 4。 更新、更快的相机硬件再加上 A4 处理器的性能，让新功能更快更易用。 正面摄像头无法使用 HDR 功能，我们怀疑这是因为快门或处理过程中的一环让它无法使用，也可能只是因为苹果不想。 如果你想用老的 iPhone 机型拍 HDR 照片，就只能借助第三方软件了。 你只需要点击 iOS 4.1 拍照界面顶部的 HDR...

The Apple iOS 4.1 is a handy, free update for the iPhone and iPod touch that adds social gaming and HDR photo-capability. It even fixes a few bugs, if you have them. This feature helps to balance...

2018年4月18日 · Complete review of Apple's iOS 4.1 software update for iPhone and iPod touch. iOS 4.1 is now available from Apple for iPhone and iPod touch. A relative small update to iOS 4 that fixes some important bugs, adds a few new features, and powers the all new iPod touch 4.

2008年3月27日 · iOS 13.1 - 2019年9月25日 iOS 13.1 iOS 13.1 包括错误修复和改进，其中包括 iPhone 11、iPhone 11 Pro 和 iPhone 11 Pro Max 上使用超宽带技术的隔空投送、“快捷指令” App 中建议的自动...