You can choose when the device will show the screen saver. For example, you can choose to show the screen saver as soon as your device is charging.

Android 9
Step 1:  Open the  settings
Step 2:  Tap on  Display
Step 3:  Tap on  Advanced
Step 4:  Tap on  Screensaver
Step 5:  Tap on  When to start
Step 6:  Choose an  option
  1. Open the settings
  2. Tap on Display
  3. Tap on Advanced
  4. Tap on Screensaver
  5. Tap on When to start
  6. Choose an option

Android Instructions
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