Display
The XR21 features a 6.49-inch IPS LCD screen that provides vibrant colors and reasonably sharp images thanks to its 1080 x 2400 pixel resolution and a pixel density of about 406 ppi. While the 77.0% screen-to-body ratio suggests somewhat noticeable bezels, the display remains immersive. It supports a 120Hz refresh rate, enhancing the experience with smooth scrolling and responsive touch controls, and can reach a brightness of 550 nits in high brightness mode, making it reasonably legible in sunlight.