Movement is jittery on Unity Remote,Movement jittery on a mobile device

While playing around with Unity remote, I came across a bug of sorts, where my Player object, when it would move, would be jittery on Unity Remote, whereas in the Game tab on my laptop, it was smooth. Is there any bug in Unity Remote? Or in my code?

Here is my code:

 void FixedUpdate()
 {
     if (Input.touchCount > 0)
     {
         Touch touch = Input.GetTouch(0);

         if (touch.position.x > Screen.width / 2)
         {
             velocity = rb.velocity;
             velocity.x = transform.right.x * 10;
             rb.velocity = velocity;
         }
         else if (touch.position.x < Screen.width / 2)
         {
             velocity = rb.velocity;
             velocity.x = transform.right.x * -10;
             rb.velocity = velocity;
         }
     }
 }