Finance v10.10.0
Does PayPal work on iPhone Duo?
It works, but with black bars. PayPal 10.10.0 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 10.10.0, read Nov 3, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v10.10.0
- Nov 2, 2026
- Duo in release notes
- Not yet
About PayPal
PayPal is made by PayPal, Inc. and first came out on the App Store in February 2019. It's #49 on today's US App Store top charts. It has 6,299,135 ratings on the US App Store, averaging 4.8 stars. Version 10.10.0 came out on Nov 2, 2026 and needs iOS 17.4 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, PayPal is #7 of them.
From its App Store listing:
PayPal is a smart way to securely shop in-store and online, earn rewards points on brands you love, send money and much more. SHOP WITH PURCHASE PROTECTION Get built-in protection before and after you buy, with support when something doesn't go as planned. *PayPal Purchase Protection is available on eligible transactions. See terms and limitations: https://www.paypal.com/us/legalhub/paypal/buyer-…
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 PayPal. 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 10.10.0 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 10.10.0 · Nov 2, 2026
Get the latest update. The new PayPal app that you know and love, now made simpler, faster and easier to use. Continue to shop, pay, earn rewards, and manage your money. All in one place.
Questions
Does PayPal work on iPhone Duo?
It works, but with black bars. PayPal 10.10.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does PayPal 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 PayPal 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 PayPal 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 PayPal 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 PayPal within about a day of its release and update this page.
What can I do about the black bars until then?
Use PayPal 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.