iPhone 17 Siri AI Features Missing: iOS 27's 12GB RAM Requirement Explained

The base iPhone 17 supports Apple Intelligence. Apple says so plainly. What sits in the footnotes is more consequential: iOS 27 introduces a higher tier of on-device AI that requires at least 12GB of unified memory, and the iPhone 17's 8GB falls short. Two Siri AI features, expressive voices and more advanced dictation are tied exclusively to that advanced model. The base iPhone 17 doesn't qualify for either. This is the first time Apple has drawn a memory-based line inside Apple Intelligence itself. Since the feature launched, 8GB had been the baseline across every supported device. iOS 27 changes that. "Supports Apple Intelligence" and "supports Apple's most advanced on-device Siri model" are now two different claims. What "supported" now means, and which devices are actually affectedApple's broad Apple Intelligence availability list across iOS 27, iPadOS 27, macOS 27, watchOS 27, and visionOS 27 covers a wide range of hardware: iPhone 16 models or later, iPhone 15 Pro and 15 Pro Max