UITextView starts at Bottom or Middle of the text

That did the trick for me!

Objective C:

[self.textView scrollRangeToVisible:NSMakeRange(0, 0)];

Swift:

self.textView.scrollRangeToVisible(NSMakeRange(0, 0))

Swift 2 (Alternate Solution)

Add this override method to your ViewController

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    textView.setContentOffset(CGPointZero, animated: false)
}

Swift 3 & 4 (syntax edit)

override func viewDidLayoutSubviews() {
  super.viewDidLayoutSubviews()

  textView.contentOffset = .zero
}

All of the answers above did not work for me. However, the secret turns out to be to implement your solution within an override of viewDidLayoutSubviews, as in:

override func viewDidLayoutSubviews() {
  super.viewDidLayoutSubviews()

  welcomeText.contentOffset = .zero
}

HTH :)

In Swift 2

You can use this to make the textView start from the top:

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()

    myTextView.setContentOffset(CGPointZero, animated: false)
}

Confirmed working in Xcode 7.2 with Swift 2