What iOS is
iOS is the mobile operating system Apple develops for the iPhone. It shipped with the first iPhone in 2007 under the name iPhone OS, and Apple rebranded it as iOS in June 2010. Every iPhone ships with iOS preinstalled, and system updates are pushed free of charge through the Settings app. The current version name, feature list, and supported devices are on Apple’s official iOS page.
iOS sits alongside macOS, iPadOS, watchOS, and visionOS in Apple’s operating-system family, with iCloud and Handoff tying the platforms together. This article covers the operating system only; the hardware lineup is described in the iPhone article and the assistant in the Siri article.
iOS 27 and core capabilities
On September 14, 2026, Apple released iOS 27 and the rest of the year’s software updates as free upgrades. According to official material, the headline items are: the Siri AI beta built on Apple Intelligence (English at launch); a dedicated Siri app whose conversation history syncs through iCloud; Write with Siri available wherever you type; photo-editing tools such as Spatial Reframing, Extend, and an improved Clean Up; and automatic Safari tab organization.
Boundaries to know: Apple Intelligence features require newer hardware (officially iPhone 15 Pro or later); server-dependent features carry daily usage limits, with expanded access planned for a fee; and Siri AI is not available initially in the EU or in mainland China. Day-to-day friction such as third-party app permissions or input-method switching depends on the specific app and system version rather than being a uniform OS limitation. For current device support and per-feature availability, check Apple’s official iOS page.
Discussion in the show
In Weekly #002’s chapter “我们如何用 Agent 制作和发布播客” (how we use agents to produce and publish the podcast), Xiangyang Qiaomu says he had written a few iOS apps for his own use but never submitted them because the App Store process felt cumbersome, and that after Computer Use shipped he handed the entire submission flow for two iOS apps and two Obsidian plugins to the agent. That is his account of an agent workflow; Apple’s developer submission process is defined by Apple’s own documentation.
In “iPhone Duo 发布：折叠屏与交互的新问题” (the iPhone Duo launch), Guizang remarks that routine iOS updates are often seen as cosmetic “tinkering” — glass effects adjusted back and forth — while the interaction and adaptation design on Duo deserves the word “inspired”. These are participant opinions about system design. More from the same discussion appears in the iPhone article.
In “语音输入：准确率之外的使用摩擦” (voice input: friction beyond accuracy), Juzi says the new iOS changed how third-party voice input runs and he finds the change unacceptable, while Yang Pan describes permission switching for voice input on iPhone. Those are combined app-plus-OS-version experiences that vary by user and system version. All quotes come from the Chinese transcript.
Frequently asked questions
Which devices does iOS 27 support?
Per the compatibility notes on Apple’s official iOS page, iOS 27 runs from iPhone 11 and the second-generation iPhone SE up through the iPhone 17 series, iPhone Air, iPhone 18 Pro, and iPhone Duo; Apple Intelligence features require iPhone 15 Pro or later. Check “Settings > General > Software Update” on the device.
How do I update iOS, and does it cost anything?
System updates are free. On an iPhone, open “Settings > General > Software Update” to check and install. Major versions typically ship alongside the autumn hardware announcement; iOS 27 arrived on September 14, 2026, per the official press release.
Does Siri AI on iOS 27 support Chinese?
Language and region availability is defined by Apple’s announcements: Siri AI shipped as a beta with iOS 27 in English, with French, Japanese, Korean, Portuguese, and Spanish following in October 2026, and no initial availability in the EU or mainland China, per the official press release. Check Apple’s Siri page for the current rollout.