1、COMPATIBILITY: This screen is designed for Galaxy S21 5G G9910 G991A G991F G991P G991R4 cell phone. You need to double check your phone model before purchase to ensure the accuracy of the screen replacement. 2、COMPLETE REPAIR: Our digitizer screen assembly can fix various screen problems such as cracks, damage, dead spots, blurred display, dust spots, color errors, touch response issues, etc. 3、HIGH RESOLUTION AND HIGH SENSITIVITY TOUCH: The screen has high resolution and high sensitivity touch function, which makes your cell phone display clear and touch smooth, and brings you a good using experience. 4、CONVENIENT INSTALLATION: Original wiring and portable installation ensure stable transmission and display. At the same time, close to the original machine holes, multi procedure meticulous and rigorous, to ensure the use of no obstacles. 5、TIP: Before installation, it is recommended to search for suitable maintenance videos for guidance to ensure proper installation. Turn off the power of the phone and disconnect the battery connection cable when assembling to ensure safe operation. Please do not press the LCD hard, it will be easily damaged.