Does Signal work on iPhone Duo?
Yes. As of November 12, 2026, Signal is built for iPhone Duo: it uses the full inner display with a layout designed for it, based on 2 reports from iPhone Duo owners.
Updated
Tried Signal on your Duo? Report it
Uses the full inner display with a layout designed for it, and adapts when you fold, unfold or prop the phone half-open.
Based on 2 reports, recent ones weighted most · Medium confidence · Last report Nov 12, 2026
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By position
From recent reports. “Didn't try” answers aren't counted.
App Store updates
Mentions iPhone Duo: “Following last week's update, consider this a duet that includes additional improvements for the iPhone Duo.”
Mentions iPhone Duo: “Following last week's update, consider this a duet that includes additional improvements for the iPhone Duo.”
Mentions iPhone Duo: “Signal is now optimized for iPhone Duo, so you can install one update to get ready for two screens.”
Mentions iPhone Duo: “Signal is now optimized for iPhone Duo, so you can install one update to get ready for two screens.”
Released after Duo submissions opened
Checked every few hours. Only builds made with the iOS 27.1 SDK, accepted since October 5, 2026, can use the whole inner display. Owner reports confirm whether an update did.
Report how it runs
Reports (2)
- Works: Outer screen
- Works: Inner screen
- Works: Keeps your place when folding
Badge for developers
[](https://isitduoready.com/app/signal-private-messenger)
<a href="https://isitduoready.com/app/signal-private-messenger"><img src="https://isitduoready.com/app/signal-private-messenger/badge.svg" alt="iPhone Duo status of Signal" height="20"></a>
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