Notifications for SMS are not working

If your notifications are working correctly, but you are not able to make SMS notifications to work, it is becasue you're trying to set SMS notifications for incorrect application. On some mobile devices, the application that catches SMS messages might have strange name - for example Contacts Management, Contacts, Dialer or even Phone.

This is highly dependent on the mobile device and Android version you are using, please make sure to experiment and find out the correct application that handles SMS messages on your phone.