Shopping v12.24.2
Does 1688 work on iPhone Duo?
It works, but with black bars. 1688 12.24.2 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 12.24.2, read Nov 3, 2026
- iPad version
- No
- Phone-only layout today
- Latest version
- v12.24.2
- Nov 2, 2026
- Duo in release notes
- Not yet
About 1688
1688 is made by 杭州阿里巴巴广告有限公司 and first came out on the App Store in March 2012. It has 1,235 ratings on the US App Store, averaging 4 stars. Version 12.24.2 came out on Nov 2, 2026 and needs iOS 13.0 or later. It's free to download.
From its App Store listing:
Your direct line to real source factories. 1688 connects you with 1.1M+ manufacturers and 300M+ products at true wholesale prices. No middlemen. No markups. Just maximum margins and massive savings. WHY 1688? • Factory Prices — Go straight to the source. Cut the markup, keep the profit. • Photo Search — Snap any product to find it instantly. Compare factories in one tap. • No Language Barriers — R…
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 1688. 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 12.24.2 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 12.24.2 · Nov 2, 2026
Core module feature upgrades and optimization of known user experience issues
Questions
Does 1688 work on iPhone Duo?
It works, but with black bars. 1688 12.24.2 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does 1688 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 1688 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 1688 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 1688 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 1688 within about a day of its release and update this page.
What can I do about the black bars until then?
Use 1688 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.