Why does my Mesh Collider RayCastHit only return a texturecoord on Unity Remote?

I have searched the answers here for someone with this problem, but I have been unable to find anyone facing the same issue. I have no idea why what I am doing works on Unity Remote but when I compile to iOS stops working.

Basically I am trying to do a simple "touch the screen to make a mark on the object" through editing the UV at the right coordinates. My plan was to do a raycast, then use textureCoord of the RayCastHit to modify the texture at the right place. That plan works fine when I test with Unity Remote.

Here is my code, first on the camera and then on the object:

 // Camera code, to capture screen touches
     function Update () {
            for (var i = 0; i < Input.touchCount; ++i) {
                     var hit : RaycastHit;
                     var ray = camera.ScreenPointToRay (Input.GetTouch(i).position);
                     if (Physics.Raycast (ray,hit, 100)) {
                         hit.transform.gameObject.SendMessage("objectTouched", hit);
                       }
                }
     }

And on the object:

 public void objectTouched(RaycastHit hit) {
             Vector2 texturepos = hit.textureCoord;
     }

Now this code works fine and dandy and gets the correct texture UV coordinates when I am using Unity Remote. I can also do a Debug.Log to ensure that hit.collider is indeed a Mesh Collider. However, when I compile and run it live, all I get for hit.textureCoord is Vector2(0,0), and for hit.collider I get null.

Why would these work fine using Unity Remote, but return null and zero values when run on the actual device?

Thank you in advance.