You tap the settings button (top left of the screen, next to the home button) and the mode selection screens pop up on the main right side of the screen. Those have the Frunk (for all but job 1 cars) and trunk buttons. If you were to tap the home button instead, you’d be at the app page, not the settings page. The new ui reduces the steps to get to those items. Easier to do than to explain in writing.