Design and Build
The Samsung X400 is compact and lightweight, measuring 86 x 46 x 20 mm and weighing just 90 grams. Its pocket-friendly size and comfortable weight made it an ideal choice for users who preferred portability. The device uses the Mini-SIM format, standard during its time. With a curvy design and available in four distinct colors—Deep Blue, Yellow Green, Dark Violet, and Caramel Orange—the X400 offered a touch of personal flair. The build quality was typical of the era, with a plastic body that was durable enough for everyday use.