PLATFORMS Signal 352
Now you can securely link multiple phones to one Signal account
↗
Signal now lets a single phone number be linked to multiple Android and iPhone devices, extending its multi-device model beyond PCs and iPads.
Engineers can rely on a unified messaging endpoint across several phones, simplifying user workflows that span personal and work devices. The optional encrypted history sync gives administrators a way to limit data exposure on devices that might be shared or lost.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Signal adds native support for linking more than one smartphone to the same account.
When a new phone is linked, users may choose whether to copy an end-to-end encrypted backlog of messages to that device.
The large-screen Android UI and Chromebook integration are still marked as works-in-progress.
THE READ
What elseif makes of it.
Previously Signal’s multi-device feature covered only desktop clients and iPads; the new release expands that model to include additional Android phones and iPhones. After linking, each device can view and reply to incoming messages, making the messenger behave like a synchronized service rather than a single-device app. The change is delivered as a software update rather than a server-side alteration, so the core encryption model remains unchanged.
Adopting the feature requires users to upgrade to the latest builds, version 8.20 on Android and 8.22 on iOS, as those releases contain the linking logic. The process involves scanning a QR code from the primary device, after which the secondary phone registers as a trusted endpoint. The only tangible cost is the storage needed for any transferred message history, which remains encrypted on the new device.
The rollout does not yet provide a polished experience on large-screen Android devices, and the Chromebook client is still being optimized, meaning users on those platforms may encounter UI quirks or missing functionality. Additionally, the feature is limited to Android and iOS; other mobile OSes are not mentioned, so they remain unsupported for multi-phone linking. Engineers should therefore test on the supported phone form factors and plan fallback handling for the unfinished interfaces.
From a security operations perspective, the ability to disable history transfer mitigates risk if a linked phone is lost or shared, but each additional device still holds a copy of the encryption keys. Teams that enforce device inventory controls will need to incorporate the new linking step into their provisioning workflows and monitor for unexpected device registrations. The end-to-end encryption guarantees that messages remain protected in transit and at rest, regardless of the number of linked phones.
For developers building on Signal’s APIs or integrating its messaging into other services, the expanded device model means session management must now accommodate multiple concurrent mobile endpoints per user. Testing should cover message sync, conflict resolution, and UI behavior across both standard and large-screen Android devices. The incomplete large-screen support suggests a need to monitor future updates for any breaking changes that could affect custom integrations.
Written by elseif from the cluster below · checked for specifics the sources never containedTHE CLUSTER