Update the app now.
WhatsApp is one of the most popular messaging apps in the world with almost 100 million new users downloading it since January.
The developers took the app to the next level last month when they launched WhatsApp Calling on Android.
iPhone users were left hanging a bit after that launch, but today is the day the update for iOS is here.
The upgrade will mean the app can rival Viber and Skype with free calls using wifi or data, it could be a real game-changer.
However, as you can see in the last line, it’s ” rolling out slowly over the next several weeks,” but download it now so you’re good to go when it kicks in.
The new WhatsApp update also adds on these new features.