The Blur effect softens the open apps in the preview of the Xiaomi device, meaning that neither textures nor fonts are visible. Blurring is recommended for applications with personal data, such as online banking apps. The Blur effect can be set individually for each app.

Note: in this tutorial we will activate the Blur effect for the Preferences app and then open the app preview to see the applied effect.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Home screen
Step 3:  Tap on  Blur app previews
Step 4:  Enable or disable an  app
  1. Open the Settings
  2. Tap on Home screen
  3. Tap on Blur app previews
  4. Enable or disable an app

Xiaomi Instructions