iPad users can type Emoji icons by enabling Emoji keyboard using the option available as part of Keyboard Settings.
Step 1: Launch the Home screen on your iPad
Step 2: Tap the Settings icon on the Home screen.
Step 3: In the Settings screen, tap General Settings then scroll down and select Keyboard.
Step 4: In the Keyboard Settings, tap the option with caption as Keyboards. The number next to Keyboards indicates the total number of Keyboards that is enabled in your iPad.
Step 5: Tap Add New Keyboard option under the Keyboards section.
Step 6: Select Emoji in the Add New Keyboard list screen.
The newly added Emoji keyboard should now appear as part of the available Keyboards list.
Step 7: Now to access Emoji Keyboard, tap the Globe icon on the Keyboard. This should display all the configured Keyboards on your iPad one by one including Emoji.