Social Networking v1.137.0
Does Bluesky Social work on iPhone Duo?
It works, but with black bars. Bluesky Social 1.137.0 is built with the iOS 26.4 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 26.4 SDK
- Version 1.137.0, read Oct 31, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v1.137.0
- Oct 30, 2026
- Duo in release notes
- Not yet
About Bluesky Social
Bluesky Social is made by Bluesky PBLLC and first came out on the App Store in February 2023. It has 13,816 ratings on the US App Store, averaging 3.9 stars. Version 1.137.0 came out on Oct 30, 2026 and needs iOS 16.4 or later. It's free to download. Among the 22 social apps we track on the US App Store, 11 already fill the inner display, 4 are partly adapted and 7 still show black bars. By number of ratings, Bluesky Social is #21 of them.
From its App Store listing:
Bluesky is the social app built for better conversations. Find your people, follow what you care about, and have fun online again — without ads or engagement traps. JOIN THE MOMENT See what people are talking about right now. From breaking news to big cultural moments, jump into conversations as they unfold and be part of what's happening. EXPLORE FEEDS Choose from thousands of community-built fee…
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 Bluesky Social. 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 1.137.0 is built with the iOS 26.4 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 26.4 SDK
Latest release notes
Version 1.137.0 · Oct 30, 2026
Trending, now on your home screen! Add the new Bluesky widget to see what everyone’s talking about without even opening the app. Plus, we squashed some bugs and made things snappier.
Questions
Does Bluesky Social work on iPhone Duo?
It works, but with black bars. Bluesky Social 1.137.0 is built with the iOS 26.4 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Bluesky Social 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 Bluesky Social 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 Bluesky Social 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 Bluesky Social 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 Bluesky Social within about a day of its release and update this page.
What can I do about the black bars until then?
Use Bluesky Social 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.