Does anyone know how to add ringtones on the sprint sanyo 3810 for free, as in no picture message or internet. Just purely connecting via blutooth or some other way. What format does the ringtone need to be in anyway. I also tried the blutooth method but the phone that I am using to connect with the sanyo 3810 does not seem to find it when searching for the phone even though its visible. I am however able to connect with the 3810 via communication wise, sending contacts, name card, etc. except when I am about to send the ringtone in mp3 format, the phone can not find the 3810. Any suggestions will be helpful. Thanks!!