Step 2: Set a Timeout for Better Securityīy default, your passphrase is cached in memory for as long as Signal is running. On the Signal homepage, tap on the ellipsis (three dots) in the top right, then choose 'Settings.' Next, open up 'Privacy' and toggle on 'Enable passphrase.' This will not only lock Signal messages but notification previews as well. Step 1: Create Your Password or Passphrase Just make sure that your original SMS application is deactivated or those messages may be stored there as well.

Destination information will not be encrypted, of course, but the bodies in the texts themselves will be encrypted. Not only will a password or passphrase keep prying eyes out of the app but, if you have Signal set up as your primary SMS messenger, it will ensure that any SMS or MMS text you receive will also be encrypted upon receipt. That's why it's good to create a password or passphrase for Signal itself, in addition to any lock screen security you have.ĭon't Miss: How to Block Contacts in Signal from Calling or Messaging You Your messages always remain encrypted when it's from Signal-to-Signal, since that's what Signal is designed for, but that doesn't stop someone with access to your smartphone from just opening up the app and checking out your conversations. Best of all, you don't need to install an app locker to get this working - you can do it right from inside Signal. One thing that makes Signal Private Messenger better on Android over iOS is that you can better secure the app with a password or passphrase.

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