Google Pixel 4
Android 10.0
1. Find "Notifications"
Press the message icon.
Press the menu icon.
Press Settings.
Press Notifications.
2. Turn on message notifications
Press the indicator next to "Show notifications" to turn on the function.
3. Select message tone
Press the indicator next to "Other notifications" to turn on the function.
Press Other notifications.
Press Alerting.
Press Advanced.
Press Sound.
Press Pixel Sounds.
Press the required message tones to hear them.
Once you've found a message tone you like, press Save.
4. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.