Signal, the encrypted messaging app, now lets users link more than one phone to the same account. The feature was announced and covered by The Verge, 9to5Google, and AboutSignal. Previously, the app already allowed linking computers and iPads as linked devices, but not additional phones: each phone needed its own registered phone number as a primary account. Now, a second Android handset can be added as a secondary device, syncing conversations with the primary one.
The change may seem small, but it solves a real problem. Anyone who uses two phones — a personal one and a work one, for instance — was forced to choose which would keep the chat history or to maintain two separate accounts with different numbers. The update removes that friction, letting users access their messages across all devices, just as it already happened on desktop. It is a natural evolution for an app that has always prided itself on privacy: now the convenience of multi-device also reaches phones.
It is worth noting that Signal's architecture preserves end-to-end encryption even with the new feature. Linked devices still receive encrypted messages and sync history without depending on a central server storing keys in plaintext. In other words: the convenience of having conversations in several places did not come at the cost of the app's fundamental promise — that only the sender and the recipient can read the content.
A useful analogy helps make sense of the change. Imagine a house key that opens every door but could only be used on one lock at a time; if you wanted to enter through the back door, you would need a separate physical copy. By allowing multiple phones, Signal hands the same cryptographic master key to several 'locks' — each device authenticates its identity, but all access the same secure space. For privacy-conscious users, this reduces the temptation to resort to app clones or unofficial solutions, which frequently compromise security.
The broader implication is competitive. At a time when WhatsApp and Telegram are fighting for users with new features, Signal's decision to prioritize multi-phone syncing signals a clear strategy: to be the secure option that is also practical for people juggling multiple devices. The question that remains is whether the feature will arrive on iOS with the same fluidity as on Android, and whether Signal can keep that balance between usability and privacy without giving up the transparency that made it a benchmark.
There is also a practical effect for anyone managing a digital identity. With multiple phones linked to the same account, users gain redundancy: if they lose or break the primary device, they can keep accessing conversations from the secondary one without relying on complicated restorations. This resembles the model already working in WhatsApp Web or Telegram, but with the important difference that Signal keeps the principle that each device authenticates its own identity without centralizing data in plaintext. For journalists, activists, and professionals who depend on secure communication, this extra layer of resilience can be decisive. The question that remains is how the feature will behave under heavy usage — many chats, many devices — and whether the promise of privacy will stay intact as syncing involves a larger number of devices and, possibly, new types of data.
Sources: The Verge, 9to5Google, AboutSignal
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