Key Mapper allows you to Map your Home, Back, or Menu Buttons to Launch Apps or Quick Actions

Button remapping apps are not too hard to find on the Play Store, but if you’re looking for a more minimal offering, check out Key Mapper by XDA Junior Member gra2f. You can remap long presses or double taps of the home, back, or menu key to launch a certain app, quick setting, or certain actions on your phone.

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