Open up the options for Soften/Harden and change the setting to be All Hard, or 0. Apply.
This restores the definition and makes the ear piece appear to be hard edged.
Using the above method of softening groups and hardening edges, we can achieve a result of a smooth low polygon model.
Maya doesn't have smoothing groups like Max does, but it doesn't take much work to create the desired effect when modeling something with very few polygons.