Beijing NetEase Youdao Computer System Co.,Ltd
Reference v12.0.4
Does Youdao Dictionary work on iPhone Duo?
It works, but with black bars. Youdao Dictionary hasn't been updated for iPhone Duo's inner display yet, so it runs in a phone-sized window.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- Not read yet
- We read each app's build SDK after it updates
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v12.0.4
- Nov 4, 2026
- Duo in release notes
- Not yet
About Youdao Dictionary
Youdao Dictionary is made by Beijing NetEase Youdao Computer System Co.,Ltd and first came out on the App Store in February 2010. It has 17,637 ratings on the US App Store, averaging 4.7 stars. Version 12.0.4 came out on Nov 4, 2026 and needs iOS 15.0 or later. It's free to download.
From its App Store listing:
网易有道词典，10亿+用户在用的专业AI查词翻译助手，支持124种语言翻译 依托网易有道20年教育科技积累、有道子曰大模型和权威词典资网易有道词典，10亿+用户的语言学习专业AI助手，支持124个语种。 全新上线AI模式，复杂语言学习任务，一个入口全搞定！ 四六级备考：从查词背词到刷题冲刺，AI帮你规划备考节奏，哪里薄弱补哪里！ 【查词翻译】牛津、韦氏、柯林斯等9本权威正版词典全收录，185万+词汇一网打尽。权威释义、地道例句、固定搭配、词根词源一查就懂；复杂用法、长难句还能继续追问。查得准是基础，学得透才是真本事！ 【单词本】查词后一键收藏，打造你的专属单词本。四六级等全学段海量词书随心挑，随时随地背一背，碎片时间也能轻松涨词汇量。 【拍照翻译】：拍一下就能翻译教材、试题，还能总结内容、讲解知识点，不懂的地方接着问。 【四六级真题备考】：海量四六级真题，整套模拟、单项突破都能练。不只解析…
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 Youdao Dictionary. 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 12.0.2 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 12.0.4 · Nov 4, 2026
修复部分已知问题，体验进一步优化～
Questions
Does Youdao Dictionary work on iPhone Duo?
It works, but with black bars. Youdao Dictionary hasn't been updated for iPhone Duo's inner display yet, so it runs in a phone-sized window.
Does Youdao Dictionary 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 Youdao Dictionary 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 Youdao Dictionary 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 Youdao Dictionary 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 Youdao Dictionary within about a day of its release and update this page.
What can I do about the black bars until then?
Use Youdao Dictionary 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.