Utilities v1.2.38
Does 国家网络身份认证 work on iPhone Duo?
It works, but with black bars. 国家网络身份认证 1.2.38 is built with the iOS 26.5 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 26.5 SDK
- Version 1.2.38, read Oct 24, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v1.2.38
- Sep 20, 2026
- Duo in release notes
- Not yet
About 国家网络身份认证
国家网络身份认证 is made by 中华人民共和国公安部 and first came out on the App Store in June 2023. It's only on the China App Store, where it has 11,977 ratings. Version 1.2.38 came out on Sep 20, 2026 and needs iOS 13.0 or later. It's free to download.
From its App Store listing:
为促进数字经济发展、保护个人信息安全，公安部会同有关部门组织建设了国家网络身份认证公共服务平台，向社会提供安全、便捷、权威、高效的网络身份认证公共服务。 国家网络身份认证App是国家网络身份认证公共服务平台的移动客户端。 个人用户可下载国家网络身份认证App，使用法定身份证件申领网号、网证，即可在不输入、不留存、不透露个人姓名、公民身份号码等明文身份信息的情况下完成身份认证。
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 国家网络身份认证. 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 1.2.38 is built with the iOS 26.5 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 26.5 SDK
Latest release notes
Version 1.2.38 · Sep 20, 2026
修复了一些已知问题。
Questions
Does 国家网络身份认证 work on iPhone Duo?
It works, but with black bars. 国家网络身份认证 1.2.38 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does 国家网络身份认证 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 国家网络身份认证 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 国家网络身份认证 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 国家网络身份认证 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 国家网络身份认证 within about a day of its release and update this page.
What can I do about the black bars until then?
Use 国家网络身份认证 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.