I got the samung galaxy Ace 2 and I wanted to know how can I change the sound of the notification (text message) because I just see how to change the default sound but I would like to put a song .....but I dont know if I can..... (sorry for my english by the way )
In the case of text message notifications you can change them in the text messaging settings.
Open the text messaging application, hit the menu button (bottom left-hand side of the phone, it looks like a little list) then select settings, notification settings are at the bottom of the next page.
I don't know why Google decided to separate the notification settings for calls and texts like that. It seems unnecessarily complicated.