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中国联通

China United Network Communications Corporation LimitedUtilities

On iPhone Duo

Letterboxed

中国联通 runs in an iPhone-sized window with black bars.

Want 中国联通 to fill the inner display? Be the first to vote.

Its latest version is built with the iOS 26.4 SDK,[1] which Apple shows letterboxed on the inner display.[2]

How we know
From the app’s build
Checked on
Version 13.2
Build
iOS 26.4 SDK
Latest version
13.2, Oct 30, 2026
Status updated

What owners report

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Version history

  1. Version 13.2Letterboxed

    iOS 26.4 SDK

    Checked Nov 2, 2026

Sources

  1. App Store build, version 13.2

    Built with the iOS 26.4 SDK. Uses none of Apple’s iPhone Duo APIs.

  2. Apple Developer: Prepare your app for iPhone Duo