How to convert mouse input to mobile touch in unity

gistfile1.txt

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityStandardAssets.CrossPlatformInput;

public class HandleMovement : MonoBehaviour {

    private Touch myTouch;
    private  Vector2 mousePos;
    private Rigidbody2D rb;

    private Vector2 offsetClicked;
    private Vector2 offsetReleased;

    private void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        offsetReleased = transform.position;
    }

    void Update()
    {
        if (Input.touchCount > 0)
        {
            myTouch = Input.touches[0]; //Get the first touch
            mousePos = Camera.main.ScreenToWorldPoint(myTouch.position);
        }
    }

    private void FixedUpdate()
    {
       // mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);

        if (Input.touchCount > 0)
        {
            Vector2 newPos = new Vector2(
                Mathf.Clamp(mousePos.x + offsetClicked.x, GameManager.gm.cameraEdges.w + 0.32f, GameManager.gm.cameraEdges.y - 0.32f),
                mousePos.y + offsetClicked.y
            );

            rb.MovePosition(newPos);
            offsetReleased = newPos - (Vector2)Camera.main.transform.position;
        } //Clicked
        else
        {
            Vector2 newPos = new Vector2(
                Mathf.Clamp(Camera.main.transform.position.x + offsetReleased.x, GameManager.gm.cameraEdges.w + 0.32f, GameManager.gm.cameraEdges.y - 0.32f),
                Camera.main.transform.position.y + offsetReleased.y
            );

            rb.MovePosition(newPos);
            offsetClicked = newPos - mousePos;
        } //Released
    }
}