Touch flip/slide misses

Hi, I have a game about 20% of time slide or flip to move players in 4 directions misses. I can't understand why touch missing? These two methods are present in touch script that is component of an object present in scene. To check the problem game is present on Google play store

 // Swipe direction is called from main script.cs (component of main player.)
     public static char getDirection()
     {
         char return_status = 'n';
 
         if (SwipeScript.direction != 'n') {
             return_status= SwipeScript.direction;
             SwipeScript.direction ='n';
         }
         return return_status;
     }
 
 // Update is called once per frame
     void FixedUpdate () {
 
         if (Input.touchCount > 0){
 
             foreach (Touch touch in Input.touches)
             {
                 switch (touch.phase)
                 {
                 case TouchPhase.Began :
                     /* this is a new touch */
                     isSwipe = true;
                     fingerStartTime = Time.time;
                     fingerStartPos = touch.position;
                     break;
 
                 case TouchPhase.Canceled :
                     /* The touch is being canceled */
                     //isSwipe = false;
                     break;
 
                 case TouchPhase.Ended :
 
                     float gestureTime = Time.time - fingerStartTime;
                     float gestureDist = (touch.position - fingerStartPos).magnitude;
 
                     if (isSwipe && gestureTime < maxSwipeTime && gestureDist > minSwipeDist){
                         Vector2 direction = touch.position - fingerStartPos;
                         Vector2 swipeType = Vector2.zero;
 
                         if (Mathf.Abs(direction.x) > Mathf.Abs(direction.y)){
                             // the swipe is horizontal:
                             swipeType.x = direction.x;
                         }else{
                             // the swipe is vertical:
                             swipeType.y = direction.y;
                         }
 
                         if(swipeType.x != 0.0f){
                             if(swipeType.x > 0.0f){
                                 // MOVE RIGHT
                                 SwipeScript.direction ='r';
                             }else{
                                 // MOVE LEFT
                                 SwipeScript.direction ='l';
                             }
                         }
 
                         if(swipeType.y != 0.0f ){
                             if(swipeType.y > 0.0f){
                                 // MOVE UP
                                 SwipeScript.direction ='u';
                             }else{
                                 // MOVE DOWN
                                 SwipeScript.direction ='d';
                             }
                         }
                         isSwipe = false;
                     }
 
                     break;
                 }
             }
         }
 
     }