Apple Reportedly Distributing 'VendorUI' Version of iOS 18 to Factories
Apple recently started distributing internal builds of iOS 18 to factories and relevant vendors, according to credible information shared on X by a private account with a track record of sharing accurate details on Apple's plans. The version of iOS that Apple provides at this stage is called "VendorUI," and access to it is strictly controlled.
Sent out on an annual basis, VendorUI is a variant of iOS that is provided to factories for quality control testing. Because it has a pre-production version of the iOS user interface that Apple won't publicly unveil until WWDC, Apple is careful about where it is distributed. VendorUI can include references to new features, new settings or changes in branding. Unlike the versions of iOS used by Apple's software engineers, VendorUI often has certain apps omitted, ensuring that only the apps necessary for testing are present.
With every iOS release, Apple develops several different versions of iOS:
- Release – Stock iOS intended for end-consumers.
- InternalUI – Created for Apple's software engineers, often contains pre-production version of the iOS user interface, with unreleased and unannounced features.
- VendorUI – Designed for quality control testing in factories and can contain elements of pre-production iOS user interface.
- NonUI – Developed for hardware engineers and calibration machines, does not feature the standard iOS user interface.
- LLDiags – Intended for use in low-level diagnostics and has no user interface at all except for a simple diagnostics menu (Diags).
The distribution of the VendorUI version of iOS 18 means that we could soon start seeing more iOS features leak because the operating system is available to a larger number of people.
Even without VendorUI, information about iOS has started to come out. We've heard that iOS 18 will have a heavy focus on AI, and there will be new Accessibility features, such as Adaptive Voice Shortcuts and Live Speech Categories. Internal versions of iOS can also contain hardware information, and back in December, we shared details on the iPhone 16 hardware sourced from iOS 18 code.
To learn more about the features that are expected in iOS 18, check out our dedicated rumor roundup page for iOS 18.
Popular Stories
Apple may have canceled the super scratch resistant anti-reflective display coating that it planned to use for the iPhone 17 Pro models, according to a source with reliable information that spoke to MacRumors.
Last spring, Weibo leaker Instant Digital suggested Apple was working on a new anti-reflective display layer that was more scratch resistant than the Ceramic Shield. We haven't heard...
This week marks the 10th anniversary of the Apple Watch, which launched on April 24, 2015. Yesterday, we recapped features rumored for the Apple Watch Series 11, but since 2015, the Apple Watch has also branched out into the Apple Watch Ultra and the Apple Watch SE, so we thought we'd take a look at what's next for those product lines, too.
2025 Apple Watch Ultra 3
Apple didn't update the...
Apple has completed Engineering Validation Testing (EVT) for at least one iPhone 17 model, according to a paywalled preview of an upcoming DigiTimes report.
iPhone 17 Air mockup based on rumored design
The EVT stage involves Apple testing iPhone 17 prototypes to ensure the hardware works as expected. There are still DVT (Design Validation Test) and PVT (Production Validation Test) stages to...
Apple will likely manufacture its 20th anniversary iPhone models in China, despite broader efforts to shift production to India, according to Bloomberg's Mark Gurman.
In 2027, Apple is planning a "major shake-up" for the iPhone lineup to mark two decades since the original model launched. Gurman's previous reporting indicates the company will introduce a foldable iPhone alongside a "bold"...
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device.
Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025:
Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Apple is preparing to launch a dramatically thinner iPhone this September, and if recent leaks are anything to go by, the so-called iPhone 17 Air could boast one of the most radical design shifts in recent years.
iPhone 17 Air dummy model alongside iPhone 16 Pro (credit: AppleTrack)
At just 5.5mm thick (excluding a slightly raised camera bump), the 6.6-inch iPhone 17 Air is expected to become ...
