iOS 18 Compatibility: Is Your iPhone on the List?

Apple has officially confirmed that iOS 27 will support 31 iPhone models, extending its reach back to the iPhone 11, according to Craig Federighi, the company’s vice president of software engineering. While the update maintains broad hardware compatibility, advanced “Siri AI” features are strictly limited to devices with at least 8GB of RAM and an A17 Pro chip or newer, citing hardware performance requirements.

Which iPhones Support iOS 27?

Apple has successfully ensured that every device capable of running iOS 26 remains compatible with the new software. According to the company’s announcement at WWDC 2026, the supported lineup includes the iPhone 11 series, all models from the iPhone 12 through the iPhone 17, and both second and third-generation iPhone SE units. This marks the seventh major operating system update for the iPhone 11, which originally launched in 2019. By supporting hardware this old, Apple continues to lead the industry in software longevity, often outpacing competitors like Motorola and Nothing, which typically offer three to five years of support.

Did you know?
Apple’s decision to support the iPhone 11 with iOS 27 makes it the most widely available iOS version in the company’s history, spanning a diverse range of 31 distinct hardware models.

Why Is Siri AI Restricted to Newer Hardware?

The new Siri, powered by Apple Intelligence, requires significant computational overhead that older processors cannot reliably handle. Apple has set a hard technical floor, requiring at least 8GB of RAM and an A17 Pro processor or later to enable these features. Consequently, the advanced assistant will only be available on the iPhone 15 Pro, 15 Pro Max, the entire iPhone 16 and 17 lineups, and the upcoming iPhone Air. This hardware gating mirrors the strategy used by competitors like Google, which often restricts advanced on-device AI features to their latest flagship chipsets to maintain performance standards.

Why Is Siri AI Restricted to Newer Hardware?

Where Is the New Siri Available?

Geographic restrictions are currently limiting the rollout of the new assistant. Apple confirmed that Siri AI will not be available in the European Union or China at launch. In the European market, Apple attributes this move to complications with the Digital Markets Act (DMA). According to Apple, the company presented proposals to the European Commission to integrate Siri AI while supporting third-party assistants, but the Commission reportedly rejected these solutions for failing to meet DMA compliance standards. Users in these regions will receive the core iOS 27 update, including standard performance and security improvements, but without the generative AI capabilities.

Apple’s Craig Federighi Explains New iPhone Security Features | WSJ
Pro Tip:
If you are a developer looking to test Apple’s latest features, the beta version of iOS 27 is available immediately following the WWDC 2026 keynote. The final public release is expected this autumn, coinciding with the launch of the new iPhone 18 Pro.

Compatibility Across the Apple Ecosystem

The hardware requirements for the new Siri extend beyond the iPhone to other Apple Silicon devices. According to the company’s technical specifications, the following devices are compatible with the new AI features:

  • iPad: Models with M1 chips or newer, and A17 Pro or later.
  • Apple Watch: Series 9 and later, Ultra 2 and later, and Watch SE 3.
  • Mac: All models equipped with M1 chips or later.
  • Vision Pro: All existing versions are supported.

Frequently Asked Questions

Will my iPhone 14 get the new Siri AI?

No. Based on Apple’s requirements, the new Siri AI is limited to devices with an A17 Pro chip or newer, such as the iPhone 15 Pro and subsequent models.

Why is iOS 27 not including Siri AI in the EU?

Apple states that its proposals for implementing the service in compliance with the Digital Markets Act were rejected by the European Commission.

Is the iOS 27 update free for all supported models?

Yes. As with previous versions, iOS 27 is a free software update for all compatible devices, including older models like the iPhone 11.


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