Display
Sporting a 1.8-inch TFT display, the C81 supports up to 256K colors, a fairly impressive feature for a mid-2000s phone. With a resolution of 132 x 176 pixels, this results in a pixel density of around 122 ppi, which, while low compared to today's standards, was sufficient for basic tasks and viewing. The screen-to-body ratio is about 20.7%, which highlights that the display is surrounded by quite a bit of bezel—a common design element at the time.