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New iOS 27 Beta 3 Feature is Limited to These iPhone Models
Apple has released the third developer beta of iOS 27, which features customizable Siri voice options. However, this functionality is restricted to newer iPhone models, specifically the iPhone 17 Pro, Pro Max, and Air, due to their advanced hardware capabilities requiring 12GB of RAM. Other models, including the standard iPhone 17, are not eligible as they contain 8GB of RAM or less. The rollout for iOS 27 is expected in September, with a public beta arriving shortly.
MonitorConfidence: MediumShort term horizon
Published 10 Jul 2026, 13:45 UTC1 min read
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Summary
TL;DR
- New customization feature for Siri's voice introduced in iOS 27 Beta 3
- Exclusive to iPhone 17 Pro, Pro Max, and Air due to RAM limitations
- Requires Apple's AFM 3 Core Advanced AI model for functionality
- Current iPhone 17 and older models lack the required RAM
- Public beta of iOS 27 will be available later this month
Interesting facts
- The feature utilizes Apple's most advanced on-device AI model to date.
- Higher RAM specifications are becoming a trend for new smartphone features.
Coverage gaps