Increase the size of the indicator in UIPageViewController's UIPageControl

Scaling the page control will scale the dots, but will also scale the spacing in between them.

pageControl.transform = CGAffineTransform(scaleX: 2, y: 2)

If you want to keep the same spacing between dots, you'll need to transform the dots individually:

pageControl.subviews.forEach {
    $0.transform = CGAffineTransform(scaleX: 2, y: 2)
}

However, if you do this in viewDidLoad, the transform has been reset by the time the view appears, so you should do this in viewDidLayoutSubviews…

override func viewDidLayoutSubviews() {
    pageControl.subviews.forEach {
        $0.transform = CGAffineTransform(scaleX: 2, y: 2)
    }
}

You can use an UIPageControl and scale it like this :

@IBOutlet weak var pageControl: UIPageControl!

 override func viewDidLoad() {
    super.viewDidLoad()
    pageControl.transform = CGAffineTransform(scaleX: 2, y: 2); //set value here
}

The problem with that is that you space between your dots will be increase too. If you want to have an accurate design with your dot you have to use 3party controls : https://www.cocoacontrols.com/

For swift 2.0 to increase or decrease size of pageControl Indicator

self.pageControl.transform = CGAffineTransformMakeScale(0.8, 0.8)

OR

self.pageControl.transform = CGAffineTransformMakeScale(1.3, 1.3)