Phone has an annoying notification sound that I cannot get rid of. Want to completely delete off my system if possible. I've gone into settings under Sound and it has a different sound than the one that plays. I have also changed to Apex Launcher and have no idea if that creates a problem. I have gone into the Contacts and also changed the message alert but that hasn't made any difference. Can you please help before I lose my mind any further?
Just go to
Settings->Sound & Notifications->Notification Sound and select
None or whatever you like.
Samsung's settings application may have renamed some things but in theory that should do it.
If you don't like any notification sound and ring tone then you might want to set your ring tone volume to 0.