Free SOS ringtone for your phone. Listen first, then download the version you like. Artist: L2B. There are 5 versions, from 16 to 48 seconds long. Tags: r&b, hip-hop and upbeat. Click a tag below to see more ringtones like this. Android users need the .MP3 file, iPhone users need the .M4R file. Both are free. More ringtones by L2B are on the artist page, the link is under the title.