Sources say Apple has distributed VendorUI version of iOS 18 to factories

On March 12, according to foreign technology media MacRumors, Apple has begun distributing internal builds of iOS 18 to factories and related suppliers. This version is called "VendorUI" and its access is strictly controlled by Apple.

VendorUI is a derivative of iOS that Apple provides to factories once a year for quality control testing. VendorUI can be considered a pre-production version of iOS, and Apple will not publicly release this version before WWDC, so Apple is very cautious about distributing VendorUI. VendorUI may introduce new features, new settings, or branding changes. Unlike the versions of iOS used by Apple software engineers, VendorUI often omits certain apps to ensure only the ones needed for testing are available. Based on media reports, Apple’s various derivative versions of iOS are expanded as follows: Release: Native iOS for end consumers. InternalUI: Created for Apple software engineers, usually contains a pre-production version of the iOS user interface, including unreleased (officially announced, but not released) and unannounced (not officially announced) features. VendorUI: Designed for factory quality control testing and can contain elements of pre-production iOS user interfaces. NonUI: Developed for hardware engineers and calibration equipment, does not have a standard iOS user interface. LLDiags: Used for low-level diagnostics, without any user interface except a simple diagnostic menu (Diags). The media believes that Apple’s release of the VendorUI version of the iOS 18 system means that more introductions to the new functions/features of the iOS 18 system may be leaked on the Internet in the near future.

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