Signal, the privacy‑focused messaging app, has released version 8.30, completing its rollout of encrypted local backups to iOS and desktop platforms. The update now enables users on Android, iOS, Linux, macOS, and Windows to create secure local backups of chats and media. The feature was first launched on Android nearly a year ago.
The backups are stored locally and encrypted with a user‑chosen password. No part of the data travels to Signal’s servers or to third‑party cloud services. The feature supports full restoration on the same device or a new one, allowing users to recover conversations after a reset or migration.
Creating a backup is a simple process. Users open the app’s settings, choose „Backup,” and set a strong password. The backup file is written to the device’s local storage, whether that is the internal memory on Android, the device’s file system on iOS, or the desktop’s hard drive. Each message, attachment, and group chat is encrypted with the password before it leaves the device. Because the encryption key never leaves the user’s device, Signal’s servers remain blind to the contents of the backup.
The local backup approach gives users full control over their data. It eliminates the need to trust a cloud provider or Signal’s infrastructure with sensitive information. For people who switch phones or reset their device, the backup can be restored quickly, preserving all chat history without exposing it to external services. The feature also satisfies users who live in jurisdictions with strict data‑privacy laws, as the data never leaves their possession.
Short answer: No. The backup format is specific to each operating system. A backup created on iOS can only be restored on another iOS device, and an Android backup works only on Android. The encryption keys are tied to the operating system’s file system, so cross‑platform transfer is not supported. Users who want to move their chats between platforms must use the official „Transfer” feature, which streams messages directly without creating a backup file.
The lack of cross‑platform backup may seem limiting, but it reinforces Signal’s commitment to end‑to‑end encryption. By keeping backups isolated to a single OS, Signal reduces the attack surface that could be exploited by malicious actors.
The completion of local backup support across all platforms marks a significant milestone for Signal. It strengthens the app’s privacy promise and offers users a reliable way to safeguard their conversations. As Signal continues to innovate, future updates may explore optional cloud‑based backups or more granular backup settings, but the current local approach remains the safest option for privacy‑conscious users.
How do I create a backup on my device? Open Signal’s settings, tap „Backup,” and follow the prompts to set a password. The backup will be written to local storage and encrypted with that password.
What happens if I forget my password? Without the password, the backup file cannot be decrypted. Signal does not store or recover passwords, so you will lose access to the backup content.
Can I share my backup file with others? You can transfer the backup file to another device, but it must be restored on the same operating system. The file is encrypted, so only someone with the password can read it.