Tencent Technology (Shenzhen) Company Limited
Productivity v7.2.0
Does QQ邮箱 work on iPhone Duo?
It works, but with black bars. QQ邮箱 7.2.0 is built with the iOS 26.1 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 26.1 SDK
- Version 7.2.0, read Oct 27, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v7.2.0
- Oct 26, 2026
- Duo in release notes
- Not yet
About QQ邮箱
QQ邮箱 is made by Tencent Technology (Shenzhen) Company Limited and first came out on the App Store in October 2011. It has 740 ratings on the US App Store, averaging 3.6 stars. Version 7.2.0 came out on Oct 26, 2026 and needs iOS 13.0 or later. It's free to download.
From its App Store listing:
[QQ Mail] Full support for general mail protocols to help you manage all your mailboxes on your phone [New] Send greeting cards on your phone [New] Query mail records in Settings [New] Quick annotation on the screenshot of the mail reading page [New] Efficient and convenient Contacts [New] Translate mails in foreign languages into Chinese Multiple Accounts · Full support for general mail protocols…
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 QQ邮箱. 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 7.2.0 is built with the iOS 26.1 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 26.1 SDK
Latest release notes
Version 7.2.0 · Oct 26, 2026
1.Fixed some known issues.
Questions
Does QQ邮箱 work on iPhone Duo?
It works, but with black bars. QQ邮箱 7.2.0 is built with the iOS 26.1 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does QQ邮箱 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 QQ邮箱 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 QQ邮箱 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 QQ邮箱 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 QQ邮箱 within about a day of its release and update this page.
What can I do about the black bars until then?
Use QQ邮箱 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.