Ienumerator is being called even when not told to

The problem happens when I open it in Android. This works perfectly on PC
Summary: when file is not detected it will download and save it persistent data path
and if the file is detected it wont run the IEnumerator SaveAndDownload() but somehow it keeps downloading even with multiple conditions

 void Awake()
    {
        m_builder.GetComponent<Image>();
        filename = Application.persistentDataPath + "/" + filename;
        alreadyDownloaded = File.Exists(filename);
        if (!alreadyDownloaded)
        {
          StartCoroutine(SaveAndDownload());
       
        }
        else 
        {
            m_progress.GetComponent<Text>().enabled = false;
            StopAllCoroutines();
            StopCoroutine(SaveAndDownload());
            LoadAsset();
        }
    }

private IEnumerator SaveAndDownload()
    {
            WWW www = new WWW(url.Trim());
            while (!www.isDone)
            {
                m_builder.SetActive(false);
                m_progress.text = "Downloading 

" + Mathf.Round(www.progress * 100).ToString();
m_progress.text += “/100%”;
Debug.Log(string.Format(“Downloaded {0:P1}”, www.progress));
yield return new WaitForSeconds(.05f);
if (File.Exists(filename) == true && alreadyDownloaded == true)
{
m_progress.GetComponent().enabled = false;
StopAllCoroutines();
StopCoroutine(SaveAndDownload());
}
else m_progress.GetComponent().enabled = true;

            }
            yield return www;
            byte[] bytes = www.bytes;
            File.WriteAllBytes(filename, bytes);

            if (www.isDone)
            {
                StopAllCoroutines();
                StopCoroutine(SaveAndDownload());
                LoadAsset();
            }
    }

Please help thanks in advance

Greetings, The first thing to check is if filename = Application.persistentDataPath + "/" + filename; returns what you expected on Android. I do believe the “/” should be "" but I could be wrong. Also, a self referencing concatenation is prone to change results.