Apple Shares Special iOS 18 ‘VendorUI’ with Factories for Testing Apple has begun sharing a special version of iOS 18, known as "VendorUI", with factories and certain vendors for testing, highlighting a key phase in the software's development cycle.

Apple has initiated the distribution of a specialized build of iOS 18 to factories and select vendors, a move that was disclosed by a trusted source on the social platform X.

This specific build, termed “VendorUI”, is intended for internal use and undergoes rigorous access control to maintain confidentiality. VendorUI serves a crucial role in the quality control process by providing a pre-production glimpse of iOS’s user interface, which is set for public unveiling at the Worldwide Developers Conference (WWDC).

This specialized version may reveal upcoming features, adjustments in settings, or changes in branding, offering insights into Apple’s direction with its operating system.

Unlike the comprehensive iOS versions utilized by Apple’s software engineers, VendorUI is stripped of certain applications, retaining only those essential for testing purposes. This selective inclusion ensures a focused quality control process, preventing leaks of undeveloped or sensitive features.

Apple’s development strategy for iOS encompasses multiple versions tailored to different internal needs, including:

• Release: The standard version intended for the general public;
• InternalUI: A version for Apple’s software engineers, featuring pre-production user interface (UI) elements and unreleased features;
• VendorUI: Aimed at facilitating quality control testing in factories, this version may contain aspects of the iOS interface still under development;
• NonUI: Crafted for hardware engineers and calibration, lacking the standard iOS interface;
• LLDiags: Designed for low-level diagnostics, featuring a minimal user interface focused on diagnostic tools.

The dissemination of VendorUI for iOS 18 suggests the possibility of upcoming leaks, as this version reaches a broader audience within Apple’s production and testing ecosystem. Previous instances have already seen the emergence of information regarding iOS 18’s development, including a significant focus on artificial intelligence enhancements and new Accessibility features like Adaptive Voice Shortcuts and Live Speech Categories.

Additionally, leaks from internal iOS versions have provided insights into future hardware developments, such as the iPhone 16, underscoring the interconnected nature of Apple’s software and hardware evolution.