If you use Signal, Discord, or any other messaging app and you DON'T want Google or Apple monitoring/reading/learning from your messages, follow these steps.

Android:

1. Open Google app

2. Tap your profile photo

3. Settings

4. Google Assistant

5. "Your Apps"

6. Choose the app (e.g., Signal)

7. Toggle "Let your assistant learn from this app" off

iPhone:

1. Settings

2. Apps

3. Choose the app (e.g., Signal)

4. Toggle Apple intelligence or Siri settings to off (“learn from this app”)