unity mobile touch swipe camera,mobile camera swipe control..

Hi Gentlemen I am a student studying mobile games. But I had a problem.
The problem is that you can not touch swipe. I do not know what to do.
I want to rotate 360 ​​degrees based on the character. I want to see the angle with the character while looking at the character at a slightly distant camera angle. Help me, gentlemen.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MouseCamera : MonoBehaviour
{
public float sensitivity = 5.0f;
public float smoothing = 2.0f;

Vector2 mLook;
Vector2 smoothV;

public GameObject Player;

// Use this for initialization
void Start()
{
    Player = this.transform.parent.gameObject;
}

// Update is called once per frame
void Update()
{
    var md = new Vector2(Input.GetAxisRaw("Mouse X"), Input.GetAxisRaw("Mouse Y"));

    md = Vector2.Scale(md, new Vector2(sensitivity * smoothing, sensitivity * smoothing));
    smoothV.x = Mathf.Lerp(smoothV.x, md.x, 1f / smoothing);
    smoothV.y = Mathf.Lerp(smoothV.y, md.y, 1f / smoothing);
    mLook += smoothV;

    transform.localRotation = Quaternion.AngleAxis(-mLook.y, Vector3.right);
    Player.transform.localRotation = Quaternion.AngleAxis(mLook.x, Player.transform.up);

    if (mLook.y <= -40)
    {
        mLook.y = -40;
    }
    if (mLook.y >= 40)
    {
        mLook.y = 40;
    }

    if (mLook.x <= -180)
    {
        mLook.x = 180;
    }
    if (mLook.x > 180)
    {
        mLook.x = -180;
    }
}

}
it is Pc.
moblie please… XD