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Does 掌上穿越火线 work on iPhone Duo?

It works, but with black bars. 掌上穿越火线 4.7.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.

Black barsFrom the app's buildLast checked
Illustration: app runs in a phone-sized window with black bars on both sides
掌上穿越火线 on the inner display — black bars

At a glance

Inner display (7.6″)
Black bars
Outer display (5.4″)
Works normally
Built with
iOS 26.2 SDK
Version 4.7.0, read Oct 24, 2026
iPad version
No
Phone-only layout today
Latest version
v4.7.0
Aug 17, 2026
Duo in release notes
Not yet

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.

Why some apps show black bars on iPhone Duo

In Split View

iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including 掌上穿越火线. 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.

How Split View works on iPhone Duo

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

  1. App build,

    Version 4.7.0 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 4.7.0 · Aug 17, 2026

诚邀您体验掌火4.7版本,版本主要功能: 【CF专区】掌上战队功能正式上线,通过掌火发现战队、加入战队、管理战队,更多战队玩法等你解锁

Questions

Does 掌上穿越火线 work on iPhone Duo?

It works, but with black bars. 掌上穿越火线 4.7.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.

Does 掌上穿越火线 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 掌上穿越火线 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 掌上穿越火线 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 掌上穿越火线 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 掌上穿越火线 within about a day of its release and update this page.

What can I do about the black bars until then?

Use 掌上穿越火线 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.