Problem with text reading in android : c#

I used this script to try to see if android can read the .txt files. This is my code

using UnityEngine;
using System.Collections;
using System.IO;

public class Text : MonoBehaviour {
	public GUIText TextOutput;
	// Use this for initialization

	void Start () {
		string[] read=File.ReadAllLines("Test.txt");
		TextOutput.text="Welcome!!"+read[0];
	}
	
	// Update is called once per frame
	void Update () {
	
	}
}

when I installed my build. The result is that this build doesn’t read file for me, I tried copy Text file to my assert folder and run again. It doesn’t work, What did I do wrong plss help. Thanks in advance

Use a TextAsset and the WWW class?

string Text;
TextAsset File;

//Fetch File path then use WWW to get the data from the path

Text = "Hello " + File.text