Finance v14.42.24
Does Coinbase work on iPhone Duo?
It works, but with black bars. Coinbase 14.42.24 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 14.42.24, read Nov 3, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v14.42.24
- Nov 2, 2026
- Duo in release notes
- Not yet
About Coinbase
Coinbase is made by Coinbase, Inc. and first came out on the App Store in June 2014. It has 1,798,049 ratings on the US App Store, averaging 4.7 stars. Version 14.42.24 came out on Nov 2, 2026 and needs iOS 16.4 or later. It's free to download. Among the 25 banking & finance apps we track on the US App Store, 8 already fill the inner display, 4 are partly adapted and 12 still show black bars. By number of ratings, Coinbase is #14 of them.
From its App Store listing:
Coinbase is the most trusted platform to securely buy, sell, trade, stake and earn - crypto, stocks, prediction markets, derivatives and more. We’re the first publicly traded crypto exchange in the U.S. and the only crypto company listed on the S&P 500. SUPPORTED ASSETS Bitcoin (BTC), Ethereum (ETH), XRP (XRP), Solana (SOL), USD Coin (USDC), Cardano (ADA), Polygon (MATIC), Polkadot (DOT), Tether (…
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 Coinbase. 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 14.42.24 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 14.42.24 · Nov 2, 2026
Coinbase is the easiest and most trusted place to buy, sell, and manage your digital currency. This update includes bug fixes and performance improvements.
Questions
Does Coinbase work on iPhone Duo?
It works, but with black bars. Coinbase 14.42.24 is built with the iOS 26.4 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Coinbase 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 Coinbase 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 Coinbase 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 Coinbase 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 Coinbase within about a day of its release and update this page.
What can I do about the black bars until then?
Use Coinbase 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.