Display
Equipped with a 4.5-inch IPS LCD display, the RS90 delivers a decent viewing experience for its time. The screen's resolution of 540 x 960 pixels, resulting in a pixel density of approximately 245 ppi, is satisfactory for basic tasks and outdoor use. However, with a screen-to-body ratio of 51.3%, the phone carries more bezel than is commonly seen in more modern designs. While this was typical for 2013, today's users might find the display a bit cramped.