Text and Image fill lerp issues - Android

I have a game that uses a lerp to fade text in and out by modifying the color of the text alpha channel on the title screen. This is used to pulse "Touch Screen" in and out on the screen. The code works perfectly on PC but when it is ported to Android the color lerping ceases to function.

On Android the color of the text stays completely white and does not fade to clear. The interesting thing is that the lerp functions properly if the player touches and holds the screen. But it does not function without the player touching the screen (which it is suppose to do).

The text is supposed to fade from white to clear then back to white while waiting for the player to touch the screen. After the screen is touched, another text object is supposed to fade from clear to white displaying some additional information.

Here is the code controlling the fade.

 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.SceneManagement;
 
 public class TitleScreenManager : MonoBehaviour {
     [SerializeField] Text title, prompt = null, wDay = null, credits = null;
     [SerializeField] Animator clockAnim;
     [SerializeField] AudioSource sfx;
     [SerializeField] AudioClip alarm;
     private float blinkTimer = 3f, blinkStartTime = 0f;
     private bool playing = false, fadeUp = true, gameStarted = false;
     private int workDay = 25;
 
 
     // Use this for initialization
     void Start () {
 #if UNITY_STANDALONE
         prompt.text = "Just Press Spacebar";
 #elif UNITY_ANDROID
         prompt.text = "Touch Screen";
 #endif
         blinkStartTime = Time.time;
         //PlayerPrefs.DeleteAll ();
         if (!PlayerPrefs.HasKey ("WSRworkDay")) {
             PlayerPrefs.SetInt ("WSRworkDay", 1);
             wDay.text = "DAY 1";
         } else {
             workDay = PlayerPrefs.GetInt ("WSRworkDay");
             wDay.text = "DAY " + workDay;
         }
     }
     
     // Update is called once per frame
     void Update () {
         if (Input.GetKeyDown (KeyCode.Escape)) {
             Application.Quit ();
         }
 #if UNITY_STANDALONE 
         if (Input.GetKeyDown (KeyCode.Space) && !playing) {
             playing = true;
             prompt.color = Color.clear;
             clockAnim.SetTrigger ("startGame");
             blinkStartTime = Time.time;
             sfx.loop = true;
             sfx.clip = alarm;
             sfx.Play ();
         }
 #elif UNITY_ANDROID
         if(Input.GetTouch (0).phase == TouchPhase.Began && !playing){
             playing = true;
             prompt.color = Color.clear;
             clockAnim.SetTrigger ("startGame");
             blinkStartTime = Time.time;
             sfx.loop = true;
             sfx.clip = alarm;
             sfx.Play ();
         }
 #endif
         if (!playing) {
             FadeText ();
         } else {
             if(!gameStarted){
                 StartGame ();
             }
         }
     }
 
     void FadeText(){
         float fadeFrac = (Time.time - blinkStartTime) / blinkTimer;
         Color fadeColor = (fadeUp) ? Color.Lerp (Color.clear, Color.white, fadeFrac) : Color.Lerp (Color.white, Color.clear, fadeFrac);
         prompt.color = fadeColor;
         if (fadeFrac >= 1f) {
             fadeUp = !fadeUp;
             blinkStartTime = Time.time;
         }
     }
 
     void StartGame(){
         float fadeFrac = (Time.time - blinkStartTime) / blinkTimer;
         Color titleFadeColor = Color.Lerp (Color.white, Color.clear, fadeFrac);
         Color creditFadeColor = Color.Lerp (Color.white, Color.clear, fadeFrac);
         Color dayFadeColor = Color.Lerp (Color.clear, Color.white, fadeFrac);
         title.color = titleFadeColor;
         credits.color = creditFadeColor;
         wDay.color = dayFadeColor;
         if (fadeFrac >= 1f && clockAnim.GetCurrentAnimatorStateInfo (0).IsName ("Clock Blink In Game")) {
             gameStarted = true;
             SceneManager.LoadScene ("Game Scene");
         }
     }