[Roll a Ball] How do I control the ball with the gyroscope/accelerometer?

I'm trying to take what I learned from the Roll a Ball tutorial and make a functional version for Android. The code I had in mind doesn't work in Unity 5.

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class movement : MonoBehaviour {
 
     public float speed;
     public Text CountText;
     public Text winText;
     public Vector3 userAcceleration;
     
     private Rigidbody rb;
     private int count;
 
     void Start ()
     {
         rb = GetComponent<Rigidbody>();
         count = 0;
         SetCountText ();
         winText.text = "";
         Screen.sleepTimeout = SleepTimeout.NeverSleep;
     }
     
     void FixedUpdate ()
     {
         if(SystemInfo.deviceType == DeviceType.Desktop)
         {
             float moveHorizontal = Input.GetAxis ("Horizontal");
             float moveVertical = Input.GetAxis ("Vertical");
             
             Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
             
             rb.AddForce (movement * speed);
         }
         else
         {
             float moveH = Input.gyro.userAcceleration.x;
             float moveV = Input.gyro.userAcceleration.y;
                     
             Vector3 movement = new Vector3 (moveH, 0.0f, moveV);
                     
             rb.AddForce(movement * speed * Time.deltaTime);
         }
     }
     void OnTriggerEnter(Collider other) 
     {
         if (other.gameObject.CompareTag ("pick up"))
         {
             other.gameObject.SetActive (false);
             count = count + 1;
             SetCountText();
         }
     }
     void SetCountText()
     {
         CountText.text = "Count: " + count.ToString ();
         if (count >= 16)
         {
             winText.text = "Win";
         }
     }
 }