Display
Equipped with a 2.2-inch TFT display, the device showcases 256K colors, although effectively supports around 65K. The display resolution stands at 176 x 220 pixels, with an approximate pixel density of 128 ppi. This screen quality is modest, suitable for basic phone tasks, but less so for media-rich applications. Additionally, the MIO 8390 features a secondary LCD display of 48 x 64 pixels, primarily for simplified notifications and quick glances, which adds a layer of convenience despite its rudimentary offering.