Links are not clickable by default in a UITextView. But luckily they can be enabled with a few simple lines of code:

myTextView.editable = NO;
myTextView.dataDetectorTypes = UIDataDetectorTypeLink;

Unfortunately you cannot have an editable UITextView with clickable links. If you set editable to YES, then all links will be treated as regular text.

You can also make addresses, phone numbers and calendar events clickable.