Nokia used to make phones that you could run over by a car without damaging the phone. You were more likely to get a flat tire or a dent in your rim instead. Today, Nokia phone have more functions, making them more susceptible to damage. A phone case will protect your Nokia phone from scratches or dents. Before purchasing one, make sure to consider the case model. Book cases and flip cases offer full protection for your phone, while a back cover only protects the back and sides.