They don’t go into bank branches. They use mobile phones (duh!). They want secure, easy-to-use mobile financial apps. They’ll even change banks if your app sucks on either score.
OK, that’s the summary. Now, from my article on why you should stop selling millennials, go find something you like to do that dovetails with what millennials tend to like to do so you remember that they’re people, not purses. Do that for all your audiences while you’re at it. Respect them, don’t sell them.