From web browsers to email clients, it's possible to replace many of Apple's default apps with better alternatives. But how ...

On your iPhone running the latest iOS 18 build, go to Settings > Apps > Default Apps. Scroll to the Messaging and Calling sections. Here, choose WhatsApp as the default.

WhatsApp can now be selected as the default calling and messaging app on iPhone, if users so wish (via WABetaInfo). A change in the latest version of WhatsApp available on the App Store (v25.8.74 ...

While apps like 1Password quickly took advantage of these new changes, there have been few to no takers in the calling, contactless payments, and messaging categories. Enter DefaultSMS, a new app that ...

Got to the new Apps sections in Settings on iOS 18. Tap on the Default Apps option under that. Now you can select new default apps for email, messaging, calling, call filtering, and web browser.

How to make WhatsApp the default app for calls and messages First, let's talk about how to make this happen. On your iPhone running the latest iOS 18 build, go to Settings > Apps > Default Apps.