Productivity v16.115.2
Does Microsoft OneNote work on iPhone Duo?
Yes. Microsoft OneNote 16.115.2 is built with the iOS 27.1 SDK, so it can use iPhone Duo's whole inner display. We haven't seen Duo-specific features yet.
At a glance
- Inner display (7.6″)
- Full screen
- Outer display (5.4″)
- Works normally
- Built with
- iOS 27.1 SDK
- Version 16.115.2, read Nov 3, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v16.115.2
- Nov 2, 2026
- Duo in release notes
- Not yet
About Microsoft OneNote
Microsoft OneNote is made by Microsoft Corporation and first came out on the App Store in January 2011. It has 1,071,195 ratings on the US App Store, averaging 4.7 stars. Version 16.115.2 came out on Nov 2, 2026 and needs iOS 26.0 or later. It's free to download. Among the 46 productivity apps we track on the US App Store, 28 already fill the inner display, 3 are partly adapted and 15 still show black bars. By number of ratings, Microsoft OneNote is #15 of them.
From its App Store listing:
Supercharge your productivity with OneNote. Organize thoughts and ideas, and simplify planning important moments with your digital note-taking. Smart notes on your phone can sync across all your devices with Microsoft OneNote. Combine the power of digital ink with the natural feel of a pen to help you sketch out your inspirations. Take smart notes and capture every detail with voice transcription.…
On the inner display
The app reaches the edges of the inner display. Text and controls stay a comfortable size instead of being blown up.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Microsoft OneNote. Open it on the inner display, then add a second app next to it. You can save the pair and come back to it later.
Duo-specific features
None confirmed yet. Duo-specific features include side toolbars, layouts that react to the fold, and content on the outer display while the app is open inside.
Evidence & history
App build,
Version 16.115.2 is built with the iOS 27.1 SDK
Apps built with the iOS 27.1 SDK or later can use the whole inner display.
- : Not confirmed yet → Black bars — built with the iOS 26.4 SDK
- : Black bars → Full screen — built with the iOS 27.1 SDK
Latest release notes
Version 16.115.2 · Nov 2, 2026
This month’s update is bug fixes only. Thanks for using OneNote! We listened to your feedback and updated the application with optimizations to help improve your note taking experience. Having trouble? Send feedback in the app (OneNote->Settings->Send Feedback) Have an idea? Add to our feature suggestion box at https://aka.ms/onenotefeedback
Questions
Does Microsoft OneNote work on iPhone Duo?
Yes. Microsoft OneNote 16.115.2 is built with the iOS 27.1 SDK, so it can use iPhone Duo's whole inner display. We haven't seen Duo-specific features yet.
Does Microsoft OneNote work on the outer display?
Yes. iPhone Duo's 5.4-inch outer display behaves like a regular iPhone screen, so every iPhone app works there as usual.
Can I use Microsoft OneNote in Split View on iPhone Duo?
Yes. On iPhone Duo every app can be placed side by side with another app on the inner display — developers don't need to opt in. How comfortable it feels at half width depends on the app's layout.