Display
The Alcatel OT-S621 features a 1.8-inch STN display capable of rendering 65K colors, which was standard for feature phones in 2008. The resolution of 128 x 160 pixels results in a pixel density of approximately 114ppi. While this doesn’t offer the sharp clarity of modern-day displays, it is sufficient for basic navigation and viewing of simple graphics and text. However, its 21.9% screen-to-body ratio reflects the period's design priority on compactness over screen space.