Though Apple implies that we can only create M4R ringtones from songs with iTunes, many converter tools do support M4R format now, which makes it possible for us to add M4R to iPhone without iTunes and then change our iPhone ringtone.
Though Apple implies that we can only create M4R ringtones from songs with iTunes, many converter tools do support M4R format now, which makes it possible for us to add M4R to iPhone without iTunes and then change our iPhone ringtone.