For years, using Signal on an iPhone came with a high-stakes trade-off: unparalleled privacy in exchange for fragility. Unlike WhatsApp or iMessage, which happily whisk your chat history up to the cloud (often sacrificing some security in the process), Signal kept your data strictly on your device. If your iPhone took a swim or got stolen, your conversations were gone forever.

That era of digital anxiety is officially over. Signal has launched secure cloud backups for iOS, giving iPhone users a way to restore their message history without compromising the app’s strict “zero-knowledge” privacy standards.

The feature, which rolled out to Android users in September, is now live for iOS (version 7.86 and later), bridging a massive gap in the app’s usability. But because this is Signal, it doesn’t work quite like the iCloud backups you’re used to.

The “free” vs. “forever” tiers

Signal is a non-profit organization that doesn’t sell user data or serve ads. Storage costs money, so their backup solution comes with a unique two-tier system designed to balance utility with sustainability.

The free plan: For most casual users, the free tier will likely be enough. It allows you to back up:

• Text messages: Up to 100MB (which is millions of texts).
• Recent media: Photos, videos, and files from the last 45 days.

This rolling 45-day window is a clever compromise. It ensures that if you drop your phone in a lake today, you can restore your chats and the context of your recent life on a new device tomorrow. However, older photos and videos will not be saved.

The $1.99/month subscription: For power users who treat their chat history as a digital scrapbook, Signal introduced its first-ever paid feature. For roughly the price of a coffee, you get:

• Full archives: All text messages are saved.
• Expanded media: Up to 100GB of photos, videos, and files, with no 45-day age limit.

This subscription directly supports Signal’s server costs, keeping the platform independent and ad-free.

The catch: a key you cannot lose

The most critical part of this new feature is the security architecture. When you back up to iCloud or Google Drive, you are often trusting Apple or Google with the keys to your data. Signal refuses to do that.

Signal’s backups are encrypted before they leave your phone. To unlock them, you need a 64-character recovery key.

Important: Signal does not know this key. They do not store it. If you lose this key, Signal support cannot reset it for you. Your backup will be a permanent, unreadable lockbox.

This is “zero-knowledge” architecture in action. It protects you from subpoenas, data breaches, and snooping—but it puts the responsibility of key management squarely on your shoulders.

How to enable it

If you want to turn this on immediately (and you probably should), the process is manual but straightforward:

1. Open Signal on your iPhone.
2. Go to Settings > Chats > Backups.
3. Tap Turn On.
4. Save your Recovery Key. The app will display your unique 64-digit code. Copy it to a password manager, write it down, or store it somewhere safe.
5. Select your plan (Free or Paid).

Once enabled, your phone will quietly encrypt and upload your history in the background.

Why this matters

This update is more than just a convenience feature; it’s a strategic maturity milestone for secure messaging.

For a long time, the difficulty of managing backups was a major barrier preventing “normal” people from switching to Signal. It was hard to recommend an app to family members, knowing they might lose photos of their grandchildren if they bought a new phone.

By solving this problem, Signal has removed one of the last major friction points for adoption. Furthermore, the company has confirmed that Desktop support is coming soon, with the ultimate goal of allowing you to seamlessly transfer your history between Android, iOS, and Desktop—a feat of cross-platform agility that even giants like WhatsApp struggle to execute smoothly.

For now, iPhone users can breathe a little easier. Your secrets are still safe, but now, they’re also saved.