Display
The BLU S1 is equipped with a 5.2-inch IPS LCD display, offering a resolution of 720 x 1280 pixels and a 16:9 screen ratio, which is standard for devices released during its time. With a pixel density of approximately 282 ppi, the display delivers adequate sharpness for everyday tasks such as web browsing, social media, and video playback. The screen-to-body ratio of around 69.5% provides a reasonable viewing area, although it does have noticeable bezels by modern standards.