Blur effect that appears in the simulator, but not on the iPhone

I wanted to create a blur effect UIImageView

using the code below. The problem is I can see BlurEffect when I run it in the Simulator, but not when I plug in my iPhone, I only see a gray background here ... any ideas? Here is the code I used:

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var myImageView: UIImageView!

override func viewDidLoad() {
    super.viewDidLoad()
        self.myImageView.image = UIImage(named: "Desert.png")
        let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Light)
        let blurView = UIVisualEffectView(effect: blurEffect)
        blurView.frame.size = CGSize(width: 375, height: 667)
        blurView.center = myImageView.center
        self.myImageView.addSubview(blurView)

}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

      

        
        
        
      

    

I am running Xcode 6.1.1 (also tried Xcode 6.2!) And my iPhone is 8.1.2