Now that's a horrible UX See how many of your friends use Briar. You need an existing social graph to start. Also, secure cloud backups for the account data isn

Now that's a horrible UX See how many of your friends use Briar. You need an existing social graph to start. Also, secure cloud backups for the account data isn't an easy thing, see e.g. their blog post on that. But now that it's coming, you'll most likely get to create a username too, and backup contact list to cloud protected with latest and greatest password hashing algorithms so that Signal doesn't have access to it (unlike Telegram).