What do you want to do? Maybe you can list them out and we can guide you along?
Do you play any musical instrument?
1) Use your voice to hum the melody of the tune, film yourself using smartphone, if you don't have a melody for the lyrics of the song that you wrote, you can try ask around on soft looking for guitarist and you may pay him/her for the time if you're unable to pick up the guitars in time to write your own melody. if you don't have any lyrics for any of the song you intend to recordHow will I be able to record the song using my mobile phone when I don't even know how the tune of the song sounds like ?