Lay out all the ingredients in front of you. Cut off the pulp of the mango, peeling it off. Cut into small cubes. Peel the bananas for both layers and cut into slices. Place the mango and bananas in the freezer. While the fruit is freezing, cut off the peel of the orange. Cut slices from the films, removing the seeds.
Prepare the mango layer. Place two frozen bananas, mangoes, peeled orange slices into a blender bowl and add sugar. Beat until smooth. Pour into serving glasses, filling them halfway.
Prepare the berry layer. Place one frozen banana, chilled blueberries, blackberries, and yogurt in a washed blender bowl. Add sugar. Beat until smooth. Carefully pour into serving containers on top of the mango layer.
Garnish with berries and mint. Serve the smoothie chilled.