Travel v8.0.18
Does DiDi China work on iPhone Duo?
It works, but with black bars. DiDi China 8.0.18 is built with the iOS 26.0 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 26.0 SDK
- Version 8.0.18, read Oct 29, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v8.0.18
- Oct 29, 2026
- Duo in release notes
- Not yet
About DiDi China
DiDi China is made by 滴滴出行(北京)网络平台技术有限公司 and first came out on the App Store in October 2012. It has 1,201 ratings on the US App Store, averaging 3.7 stars. Version 8.0.18 came out on Oct 29, 2026 and needs iOS 13.4 or later. It's free to download.
From its App Store listing:
DiDi welcomes global visitors to travel around China. 【English interface supporting global mobile number login】 Inbound users can access the English version of ride-hailing services with ease and register with their mobile number. 【Bilingual communication with drivers】 The in-app messaging feature with bilingual translation between English and Chinese ensures smooth communication between riders an…
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 DiDi China. 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 8.0.18 is built with the iOS 26.0 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 26.0 SDK
Latest release notes
Version 8.0.18 · Oct 29, 2026
-Performance improvements and bug fixes.
Questions
Does DiDi China work on iPhone Duo?
It works, but with black bars. DiDi China 8.0.18 is built with the iOS 26.0 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does DiDi China 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 DiDi China 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 DiDi China 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 DiDi China 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 DiDi China within about a day of its release and update this page.
What can I do about the black bars until then?
Use DiDi China 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.