WhatsApp provides free calls to all of your contacts using the app. All you need is a data connection. But did you ever notice, that these types of calls often sound a little different with regards to their ringtone? WhatsApp uses its own menu for setting the ringtone. Here’s a tutorial on how to change your WhatsApp ringtone. It only takes a few steps to customize the setting.
Open up the “WhatsApp” application on your iPhone. Tap the little cogwheel icon at the bottom right to get to the “Settings” tab. Next, tap “Notifications” and finally select “Ringtone” from the menu.