Travel · ACADEMY OF RAILWAY SCIENCES CO., ltd.

铁路12306 isn't ready for iPhone Duo yet.

Name: 铁路12306
Author: ACADEMY OF RAILWAY SCIENCES CO., ltd.

Outer displayWorks

The outer screen is regular iPhone size, so every app runs normally there.

Inner displayLetterboxed

Version built Jun 26, 2026, before Apple opened Duo builds on Oct 5. It can't use the full inner display.

Tabletop: No reports yetBe the first to ask for it

What this means for you

This version was built before Apple accepted iPhone Duo builds, so on the inner display it opens in a smaller window with empty space around it.

Folded, on the outer display, it works like on any iPhone. The fix has to come from the developer: an update built with the iOS 27.1 SDK or later.

Tap "I want this" to show the developer that Duo owners are waiting.

No updates since October 5. App Store data checked 3h ago.