It seems Apple added text expansion to iOS 5 and decided not to mention it. This is a great, highly-desired feature that can save you tons of time typing frequent phrases and long words. Here's how to set it up and the phrases you'll want to add right away.
Set Up Text Expansion (Shortcuts)
First things first, let's get text expansion (or Shortcuts, as Apple calls it) set up. To get it set up, either watch the video up top or follow these steps:
Open up the Settings app on your iPhone's home screen.
Tap the General section.
Tap the Keyboard section.
Swipe down to the bottom and tap the button labeled "Add New Shortcut..."
Under "Phrase" type the phrase you want the shortcut to expand to, and under "Shortcut" type the shortcut you want to type instead. For example, if you wanted...