samsung notification sound cannot be changed

[Android Question]

Hi I have a Samsung S3 (with LTE). I am changing the default notification sound. But when a new text message is received, the previous tone is still used. I have tried this with standard tones as well as tones download from the playstore. I have also restarted the handset.

 

[Rukbat]

Messaging app. Menu. More. Select Ringtone (under Notification settings).