if ((Input.GetButtonDown("Jump")) ||
((Application.platform == RuntimePlatform.Android) && (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began))) {
// your code here
}
((Application.platform == RuntimePlatform.Android) && (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began))) {
// your code here
}