Step 1: Open Settings
Open Settings, and tap general.
Step 2: Choose Keyboard
Keyboard can be found near the bottom.
Step 3: Choose Keyboards.
Step 4: Choose Add New Keyboard
Step 5: Choose Emoji
Step 6: Now, Use the Keyboard!
Use the globe icon near the 123 button to switch back and forth between keyboards. (Tap the image to see the whole thing)