Select, cut, copy, and paste text on iPhone
To select text, do any of the following:
Select a word: Double-tap with one finger.
Select a paragraph: Triple-tap with one finger.
Select a block of text: Double-tap and hold the first word in the block, then move the grab points to select text.
Tip: To move text without cutting or copying, touch and hold selected text until it lifts up, then drag the text to another location.