Display
At the heart of the K550 is its 1.9-inch TFD display, capable of displaying 256K colors. Although modest by today’s standards, the screen offered satisfactory clarity and vibrancy for its time, with a resolution of 176 x 220 pixels, translating to a pixel density of approximately 148 pixels per inch. The screen-to-body ratio, around 24.2%, reflects the era's standard, focusing more on functionality than expansive display real estate. The phone allows customization with downloadable wallpapers and screensavers, enabling a personalized user experience.