This will only work in WhatsApp up to iOS 9.0 and below.
Other apps do not currently support this new and edgy emoji. You don’t need a “middle finger emoji app” or any additional software to do it. However, we recommend you update your WhatsApp application to the latest version by going to the “App Store” app any verifying that you have installed all available updates.
It’s not possible to add the middle finger emoji to your keyboard, however you can copy and paste it into WhatsApp and it will work! Note that you will not be able to see the symbol in the below box, but trust us, as soon as you paste it into WhatsApp it’ll work:
How to add the middle finger emoji as a shortcut
Go to your “Settings” app and select “General”, then “Keyboard” and finally “Text Replacement” to add a new phrase (we recommend beginning it with a colon or other special character, so it won’t be triggered by accident) and paste the middle finger emoji in the “Shortcut” field. Done!