Display
The primary display of the Z620 is a 2.3-inch TFT screen capable of displaying 256K colors. Featuring a resolution of 240 x 320 pixels, the screen offers acceptable clarity and brightness for its time, presenting a pixel density of approximately 174 ppi. In addition to the main display, the phone includes a secondary external OLED screen with a modest 96 x 16 pixel display. Although monochrome, this additional screen is handy for quick information like time and call alerts without needing to engage the main display.