Design and Build
The NIU GO 21 is compact and light, indicative of its purpose as a basic mobile phone. With dimensions of 105 x 44.9 x 14.2 mm and a weight of just 66 grams, it easily fits into the pocket and is a breeze to carry around. Its design is straightforward, featuring a classic candybar form factor that was typical of phones from this era. The phone supports Dual SIM functionality, allowing users to manage two separate phone lines or service providers simultaneously, a must-have feature for business travelers and anyone looking to maintain separate personal and work lines.