Force Closed when using GPS

I've been trying different ways to use GPS function of unity . It's all up and working but the problem after a certain seconds it'll result to a force shutdown here's my simple code for the GPS.

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class gps : MonoBehaviour
 {
     public Text singleText;
     public int x;
     private void Start()
     {
         // Turn on location services, if avialable
         Input.location.Start();
     }
 
     private void Update()
     {
         UpdateLocation();
     }
 
     private void UpdateLocation()
     {
         // Do nothing if location services are not available
         if (Input.location.isEnabledByUser)
         {
             float lat = Input.location.lastData.latitude;
             float lon = Input.location.lastData.longitude;
 
             
 
             singleText.text = "Depart lat: " + lat + " lon: " + lon;
         }else
         {
 
             x += 1;
             singleText.text = x.ToString();
         }
     }
 }