Download your desired song on your device to install your ringtones Samsung. This can be done through a network of wireless Internet Wi-Fi with a good signal, or to download a ringtone from the computer. For the second option, you will need the adapter that always comes with the phone. If in box you have not found, consult the seller.
After the audio file is downloaded, go to the folder that serves as a directory for downloads, and click on the desired song. When the song opens, select "Options" and click on the option "Establish the call". The phone will prompt you to choose which type of signal to set a song as sms, contact, any incoming call. Select the appropriate option.
If your phone is Samsung Galaxy, regardless of the variety, you need to download the audio file in a special folder called Notifications. First check: is there this folder on your memory card. If not, create it using installed on the phone file Manager.
Copy the selected song to the Notifications folder and navigate to the settings responsible for setting ringtones call. Now among the standard audio, you will find your song.