https://wccftech.com/facebook-now-wants-to-become-your-default-messaging-app-on-ios/

In its latest set of demands, Facebook is now looking to become the default messaging app on iPhones. Although iPhone does not really have a 'default' for modern messaging as users are free to choose between iMessage, WhatsApp, and any other alternatives, text messaging, or SMS, can only be sent and received via Apple's own Messages app.

After seeing that users can now change their default browser and mail apps on iPhone and iPad, Facebook feels that it should be allowed to become the default text messaging app for iOS users.