Audio not working on Android Phone

I have a problem with my audio source working on android phone. The audio plays perfectly in the editor and at the right time however when I build to my android phone the sound is missing and does not play. I've tried everything like making an empty game object, attaching the clip to an audio source and loading it through code, making a prefab and loading it into the game during play and tried messing about with the audio settings like compressing it etc. Any ideas about why it would not be working?