Design and Build
The Motorola C331 had a compact design, measuring 101 x 48 x 21 mm and weighing just 83 grams. This light and small form factor made it very portable, fitting easily into pockets or small bags. Its body housed a Mini-SIM slot, sticking to the standards at the time. The design was functional, with a user-friendly interface enhanced by a grayscale graphic display capable of showing 98 x 64 pixels across its 5-line layout. This display capability worked within the limitations of showing text and simple graphics in four shades of grey, adequate for the icons and content it needed to show.