what kinda phone is it. and does it play mp3 or midi ones.. does it have internet on it, or does it use usb, blue tooth, or what.. u gotta be specific.. do you have the software to add stuff to ur phone or what.
its kinda like saying, whats wrong with my car it wont start. well what kinda car is it, what is it doing. etc etc
If you've got a link cable/IR/bloohtooth, and the phone makers software, you can use the software to convert MIDI files into the phones format and copy them over. It depends on the maker though, i know that nokia and seimens do this.