How to make a phone call in iOS 10 using Swift?

In simulator we can’t test in below code using device we can try

1234567970 - example phone number

let url: NSURL = URL(string: "TEL://1234567970")! as NSURL

UIApplication.shared.open(url as URL, options: [:], completionHandler: nil)

We can write above code as one function and call that method in viewdidload. (Or) write above code as it is in viewdidload method.

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