Open the app switcher
With no Home button to double-click to open the app switcher, another on-screen gesture is used: Swipe upwards as if to return to the Home screen, but keep your finger on the screen at the end, then release. The required delay is pretty short, so experiment to find a timing you find comfortable and reliable. Switch between apps more quickly Save yourself the time it takes to enter the app switcher and jump back and forth between a couple of apps. Instead, swipe rightwards on the bar at the bottom of the screen; repeat to revisit even more of your previously-used apps. This works both on the Home screen and also within apps, so you may rarely need to use the app switcher.