Food & Drink v26.72.5
Does McDonald's work on iPhone Duo?
It works, but with black bars. McDonald's 26.72.5 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- iOS 26.2 SDK
- Version 26.72.5, read Oct 23, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v26.72.5
- Oct 12, 2026
- Duo in release notes
- Not yet
About McDonald's
McDonald's is made by McDonald's USA and first came out on the App Store in October 2014. It's #37 on today's US App Store top charts. It has 7,884,466 ratings on the US App Store, averaging 4.8 stars. Version 26.72.5 came out on Oct 12, 2026 and needs iOS 15.6 or later. It's free to download. Among the 19 food & delivery apps we track on the US App Store, 6 already fill the inner display, 0 are partly adapted and 13 still show black bars. By number of ratings, McDonald's is #4 of them.
From its App Store listing:
Get the app now for Mobile Order & Pay, MyMcDonald’s Rewards, app exclusive deals, McDelivery, bonus offers and other features to make the most of your visit to the Golden Arches. Mobile Order & Pay Get your favorites fast with Mobile Order & Pay. Place your order and select your pickup option and the crew will prep while you’re on the way. Excludes Drive Thru. MyMcDonald’s Rewards Join MyMcDonald…
On the inner display
Apps built with older SDKs are placed in a phone-sized safe area on a black background. Everything works; you just don't get the bigger screen.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including McDonald's. 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 26.72.5 is built with the iOS 26.2 SDK
Apple runs apps built with the iOS 26 SDK or earlier in a phone-sized window on the inner display.
- : Not confirmed yet → Black bars — built with the iOS 26.2 SDK
Latest release notes
Version 26.72.5 · Oct 12, 2026
Hi bestie, Now get your faves delivered—and earn points—with McDelivery through the app. As always, we’ve made other updates to enhance your experience. Hope you’ll enjoy
Questions
Does McDonald's work on iPhone Duo?
It works, but with black bars. McDonald's 26.72.5 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does McDonald's 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 McDonald's 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.
Why does McDonald's have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier run in a phone-sized window on the inner display, and iOS 27 builds can still leave some space empty. The bars disappear once the developer rebuilds the app with the iOS 27.1 SDK — you only need to update the app.
When will McDonald's fill iPhone Duo's inner display?
When its developer releases an update built with the iOS 27.1 SDK or later. We read the SDK of every new version of McDonald's within about a day of its release and update this page.
What can I do about the black bars until then?
Use McDonald's on the outer display, where it works like on any iPhone, or put it in Split View next to another app on the inner display so less of the screen goes unused.