game not fitting in phone screen

I made a game for smartphones. it is free aspect. I play it on my iphone 4 and it fits fine. but on iphone 5 I can see my skybox behind the game. the gui parts are anchored fine so they work good. but not the game. is there a way to make anchors on my gameobjects that aren’t gui?

Apply this script to your main camera:

using UnityEngine;
using System.Collections;

public class resolution : MonoBehaviour {
	private float nearClipPlane = 0.3f ;
	private float farClipPlane = 1000;
	public float orthographicSize = 5;
	public float aspect = 2.25f;
	void Start ()
	{
		Camera.main.projectionMatrix = Matrix4x4.Ortho (
			-orthographicSize * aspect, orthographicSize * aspect,
			-orthographicSize, orthographicSize,
			nearClipPlane, farClipPlane);
	}
}

You may need to adjust the values of the orthographic size & aspect size to fit your camera but hopefully that does the trick for you!