Firefox spokesperson Christopher Hilton tells The Verge that the browser has seen a more than 50 percent jump in users in Germany and a nearly 30 percent increase in France.
Brave saw a similar increase in users after Apple started letting users choose their default browsers on iOS 17.4 in the EU last week.
At least for Android, you can pick your default browser from a selection in the installation when you first setup your phone. So no, Chrome is not necessarily the default on Android.
What? I never saw such a selection on setup, and I set up some Nokia Android, LineageOS, GrapheneOS and Google Pixel OS
It’s a recent eu (or eea) thing: https://www.android.com/choicescreen/dma/
Edit: that article seems to suggest that it’s only just now a thing, but it has been here a few years already, from 2019: https://blog.google/around-the-globe/google-europe/presenting-search-app-and-browser-options-android-users-europe/: