Display and User Interface
Sporting a 2.12-inch TFT display, the D840 offers 256K colors, which were fairly standard at the time. The resolution of 240 x 320 pixels results in a moderate pixel density of approximately 189 ppi. Though unimpressive by today's standards, the screen offered vibrant visuals for its time, making it suitable for basic multimedia and user interface navigation. The screen-to-body ratio of about 27.6% reflects a time before high emphasis on maximizing display real estate.