Many new phones go to navigation movements of the physical buttons of the past. The idea is to maximize screen space as much as possible while still being intuitive. Something cool that you should know about, Chrome for iPhone and Android has a nice little trick that goes well with these new gestures.
Instead of tapping the three-button menu button in a tab to open Chrome options, tap and swipe down when using Android, or tap, pause, and swipe up when using an iPhone. From that point you can drag your finger over an item in the menu and then release it to confirm your choice.
Normally, tap the menu, lift your finger, and then tap the item in the list to confirm it. With this quick gesture on Chrome you get a faster and more seamless experience without lifting a finger.
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