Samsung Good Lock gave my Galaxy three extra buttons I didn't know I had

Samsung's navigation bar ships with three buttons; Back, Home, and Recents, and there is no obvious way to add more. Phone makers spent years telling us to abandon that strip entirely, insisting that full-screen gestures were the smarter way to use a big display. So you make the switch, clear the bottom of your screen, and try to get used to swiping from the edges. But on a massive Galaxy, that clean look has a catch.

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