Display
Equipped with a 1.8-inch TFT display, the NIU C21A offers a basic visual interface. The screen supports 256K colors with a resolution of 128 x 160 pixels, resulting in a pixel density of approximately 114 ppi. Given its small size and limited screen-to-body ratio of around 21.4%, the display is serviceable for basic tasks such as reading text messages and navigating through the phone’s menu, although it lacks the vibrancy and clarity seen in modern displays.