PROBLEM :

Gmail notification sound does not ring when new mail is received

SOLUTION :

Check Notification Settings: Ensure that your Gmail app's notification settings include 'Sound' and 'Vibrate'. This can be found under 'Settings > Apps & Notifications > Notifications > Advanced > Vibration and Sound'.

Clear App Cache and Data: Go to 'Settings > Apps > Gmail > Storage > Clear Cache and Clear Data'. This may reset some personalized settings, so review them after performing this step.

Update App: Check for available updates for the Gmail app by going to 'Play Store > My apps & games > Updates'. Install any pending updates.

Restart Device: Simply restarting your phone might resolve the issue.

Check Other Apps: Ensure that no other apps are interfering with Gmail notifications by checking their respective permissions and notification settings.

Enable Sync: Turn on sync for your Gmail account under 'Settings > Accounts > Gmail > Sync'.

Reinstall App: If all else fails, uninstall the Gmail app and reinstall it from the Play Store.

Terms:

Notification Settings - The settings within an application that control how the user is notified about specific events (e.g., receiving new emails).

Clear Cache - A process of removing temporary files stored by an application to improve its performance.

Clear Data - A process of deleting all data associated with an application, including personalized settings.

Update - A modification made to an application to fix bugs, improve functionality, or add new features.

Restart - To shut down and then start up a device again.

Interfere - To cause disruption or conflict between different applications or processes.

Uninstall - To remove an application from a device.