How to set WhatsApp as the default calling app on iPhone

Apple has finally made it possible to change the default calling app on iPhones, allowing users to save money and avoid accidental charges. With iOS 18.4 or later, you can now select WhatsApp as your primary app for making calls, making it easier to avoid traditional phone charges, especially for international calls. Here’s how to do it—and why it might save you more than just a few euros.

Why you should switch to WhatsApp for calls

Most people no longer use traditional calls on their iPhones. Apps like WhatsApp, FaceTime, and Zoom offer free calls using data or WiFi, making them the go-to option for many. This shift hasn’t gone unnoticed: mobile operators are offering cheaper plans with fewer minutes, knowing users rely more on internet-based calls.

Using WhatsApp as your default app helps you avoid unexpected charges when tapping a number in Safari, Maps, or Contacts. And as long as your contacts also use WhatsApp, it’s an easy and cost-free alternative.

How to make WhatsApp your default calling app

Setting WhatsApp as your go-to app takes less than a minute:

1. Open Settings on your iPhone
2. Scroll to Apps
3. Tap Default apps
4. Select Calls
5. Choose WhatsApp from the list

From now on, tapping any phone number will launch WhatsApp instead of the Phone app, automatically using your data plan or WiFi connection.

Besides saving money, WhatsApp offers smoother call quality when connected to a stable network. You can also switch to video calls instantly within the app. Just remember: this only works with contacts who also use WhatsApp, and a poor connection can affect quality.