Social Networking v8.35.1
Does Signal work on iPhone Duo?
Yes. Signal is built for iPhone Duo — it runs full screen on the 7.6-inch inner display and adapts its layout for the fold.
At a glance
- Inner display (7.6″)
- Built for Duo
- Outer display (5.4″)
- Works normally
- Built with
- Not read yet
- We read each app's build SDK after it updates
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v8.35.1
- Oct 31, 2026
- Duo in release notes
- Mentioned
About Signal
Signal is made by Signal Messenger, LLC and first came out on the App Store in July 2014. It has 1,109,211 ratings on the US App Store, averaging 4.7 stars. Version 8.35.1 came out on Oct 31, 2026 and needs iOS 15.0 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, Signal is #12 of them.
From its App Store listing:
Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private. • Send texts, voice messages, photos, videos, GIFs, and files for free. Signal uses your phone’s data connection, so you avoid SMS and MMS fees. • Call your friends with crystal-clear encrypted voice and video calls. Group calls support…
On the inner display
The app reaches the edges of the inner display. Text and controls stay a comfortable size instead of being blown up.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Signal. 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
Release notes,
Release notes for version 8.35.1
• Signal is now optimized for iPhone Duo, so you can install one update to get ready for two screens. We will unfold additional improvements in the future too.
- : Not confirmed yet → Black bars — built with the iOS 26.5 SDK
- : Black bars → Built for Duo — release notes for 8.35 say it supports iPhone Duo
Latest release notes
Version 8.35.1 · Oct 31, 2026
• Signal is now optimized for iPhone Duo, so you can install one update to get ready for two screens. We will unfold additional improvements in the future too.
Questions
Does Signal work on iPhone Duo?
Yes. Signal is built for iPhone Duo — it runs full screen on the 7.6-inch inner display and adapts its layout for the fold.
Does Signal 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 Signal 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.