On iPad/iPhone Turn Caps Lock on With a Double-Tap on Either Shift Key

iPads and iPhones have a Shift key, which is handy when you need to type a capital letter. But what if you want to type something in all caps? Pressing Shift for each letter is a pain. No worries though, a simple double-tap on either Shift key will lock them down so you will get all caps as you type. Just tap either Shift key again to turn all caps off.