Ons 16 Mini
While taking portraits of her mother, Andrea uses the portrait mode on
her point-and-shoot camera. What does portrait mode do to Andrea's
photos?

The strength of “portrait mode” on any device running is the ability to recognize faces. As humans, we are hard-wired to recognize faces. So, the algorithms in the camera app tend to pay special attention to faces forgoing all other details including hair, ears, or other objects in the same focal plane. Therefore making her photos look more detailed.