You didn’t design a concept, you asked AI to generate a “mini phone with the Nothing design”, which it miserably failed at.
Nothing isn’t just lights slapped on the back of the phone with random shapes here and there. The amount of detail and careful planning that goes into each version just cannot be replicated by a prompt.
Nothing against mini phones, even tho I think they’ll not make a comeback. You did not design anything. Pick up a pencil and a ruler, reference other Nothing products and then carefully design one.