Design and Build
The NIU C21A features a compact and lightweight design, with dimensions measuring 106 x 45 x 14.5 mm and a weight of just 73 grams without the battery. This ensures portability and ease of handling, making it convenient to carry around in pockets or small bags. The use of Mini-SIM slots allows for dual SIM functionality, useful for users who require separate numbers for different purposes. The phone is available in a variety of vibrant colors, including Black, White, Blue, Green, Purple, Red, and Fuchsia, catering to personal preferences for aesthetics.