If you go to your iPhone settings, you should be able to click on '''Firefox'''. After you click Firefox, there should be a '''Default browser''' button. If you click that, you will be able to set your default browser. There's more information on the [[Set Firefox as the default browser for iOS]] page. There's also a video included in [https://blog.mozilla.org/firefox/firefox-default-for-ios/ this Mozilla blog post]. You will need to have iOS 14 or higher installed on your iPhone to be able to see this feature though. Hope this helps.