You can permanently disable your phone number from being recognized as a Signal user by unregistering your phone number. If you've uninstalled, reinstall Signal and use the steps listed below.

Follow the steps for your platform:

• Android
• iOS
• Desktop

 Did you mean to view:

• Delete messages and conversation alerts
• Unlinking devices
• New Number or New Phone
• Notification Options

 

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Android

Follow steps to unregister:

1. In Signal, tap your profile  > Advanced > Delete account.
2. Enter your Signal number.
3. Tap Delete account.
4. Confirm Delete account.

 

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iOS

Follow steps to unregister and delete your message history on this iPhone:

1. In Signal, tap your profile  > Account > Delete Account.
2. Enter your Signal number.
3. Tap Delete account.
4. Confirm Delete account.

 

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Desktop

Follow these steps to unregister.

Use these steps to unlink and delete your message history on Desktop:

1. Open Signal.
2. Navigate to Preferences.
   - Mac: Go to Signal > Preferences.
   - Windows: Go to File > Preferences.
   - Linux: Go to File > Preferences.
3. Select Clear Data.
4. Choose Delete All Data to confirm.
5. You will remain registered on your mobile device. Follow steps above to unregister your number. 

Uninstall to remove Signal's app icon and data: 

• Windows
  Replace <YourName> with your Windows User in the steps below
  1. Select Uninstall Signal.exe in
     C:\Users\<YourName>\AppData\Local\Programs\signal-desktop
  2. Delete C:\Users\<YourName>\AppData\Roaming\Signal
• macOS
  1. Delete the Signal.app file from the /Application or ~/Application directory
  2. Delete local data from ~/Library/Application Support/Signal
• Linux
  1. Use apt-get remove signal-desktop
  2. Delete ~/.config/Signal\