Here's a little known keyboard trick on the iPhone or iPod Touch that will activate Caps Lock mode for typing in all capital letters. Unfortunately it isn't available by default--you have to turn it on.
1. Open the Settings app 2. Tap General 3. Tap Keyboard 4. Flip the Enable Caps Lock switch to ON
Now, when the keyboard is open and you want to type more than one capital letter, quickly double-tap the shift key to enable Caps Lock. The Shift key will turn blue. Type the word you want in all caps, i.… Read more