Design and Build
The Samsung S400i features a compact and lightweight design with dimensions of 91 x 45 x 20.9 mm and a weight of just 88 grams. This made it an easy fit for pockets and small bags, embodying the trend of portable communication devices from its era. It supports a Mini-SIM card and showcases a sleek black finish, hinting at a professional aesthetic. The handset does not have the larger, touch-sensitive screens of modern smartphones but instead incorporates a solid, tactile interface.