Games v2.745.1138
Does Roblox work on iPhone Duo?
It works, but with black bars. Roblox 2.745.1138 is built with the iOS 26.2 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 26.2 SDK
- Version 2.745.1138, read Oct 29, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v2.745.1138
- Oct 28, 2026
- Duo in release notes
- Not yet
About Roblox
Roblox is made by Roblox Corporation and first came out on the App Store in May 2011. It's #8 on today's US App Store top charts. It has 20,548,683 ratings on the US App Store, averaging 4.5 stars. Version 2.745.1138 came out on Oct 28, 2026 and needs iOS 14.0 or later. It's free to download. Among the 238 games we track on the US App Store, 34 already fill the inner display, 9 are partly adapted and 187 still show black bars. By number of ratings, Roblox is #1 of them.
From its App Store listing:
ROBLOX – MILLIONS OF GAMES ACROSS EVERY GENRE. PLAY FREE. Roblox is home to every kind of game, for every kind of player. Compete in high-octane racing games, battle it out in hardcore tactical shooters, or put your survival skills to the test in unpredictable environments. Embark on an epic adventure in immersive RPGs, build massive empires in tycoons, or dive into horror, anime, and sports games…
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 Roblox. 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 2.745.1138 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 2.745.1138 · Oct 28, 2026
To make Roblox work better for you, we deliver updates regularly. These updates include bug fixes and improvements for speed and reliability.
Questions
Does Roblox work on iPhone Duo?
It works, but with black bars. Roblox 2.745.1138 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Roblox 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 Roblox 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 Roblox 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 Roblox 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 Roblox within about a day of its release and update this page.
What can I do about the black bars until then?
Use Roblox 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.