Unlike most of the cruel people here, i can help you with that
well if you have bluetooth devices both on your computer and cellphone you may use that with downloading some songs off "guitarpro" and send the MIDI files to your phone which will work nice with your cellphone unless its monophonic. And you can also download the midi files of many songs off internet just google for them.
hope that was helpful.
It's not nice to be harsh on the new people kids