Notification sound but no notification

Hi there, dumitru144,

Thanks for visiting the Apple Support Communities regarding your notification sounds. We understand you're getting a notification, but do not see one. We'd be happy to help!

First, check your Notification settings: Use notifications on your iPhone, iPad, and iPod touch - Apple Support. You'll want to make sure you have the options selected on where the notification should appear (on the Lock screen, in Notification Center, and whether or not you want Banners to appear at the top of the device).

You may also want to have Badges enabled, which will put a number badge on an app icon, and indicates how many new notifications are available in the app.

Should you continue to not receive any actual notifications, try the following troubleshooting from the above Apple Support article:

"If you don't see notifications for a specific app

To get notifications, connect to a Wi-Fi or cellular network. If you still don't get notifications for a specific app, try these steps:

1. Make sure that the app supports notifications. Go to Settings > Notifications, select the app, and make sure that Allow Notifications is on.
2. If you have notifications turned on for an app but you're not receiving alerts, you might not have Banners selected. Go to Settings > Notifications, select the app, then select Banners.
3. Make sure that you’re signed in to your Apple ID. 
4. Make sure that Do Not Disturb is off. 
5. If you’ve recently installed an app or restored from a backup, open the app to start getting notifications."

Best!

Thanks so much for following up, dumitru144,

Since you're still having trouble with Notifications, we would recommend reaching out to Apple Support directly for additional assistance. You can do that here: Get Support.

Have a wonderful day!