?Premium Service? We are committed to providing the best products and services. If you encounter any problems or need help during the purchase process, please feel free to contact our customer service team, who will be happy to provide you with assistance and support. ?High-Quality Screen? This replacement screen for Samsung Galaxy S21 Ultra is made of ultra-thin and scratch-resistant tempered glass, undergoes rigorous quality testing, and ensures high quality and stable performance, providing clear and bright visual effects and excellent durability. ?Professional Installation? We provide a full set of installation tools (excluding instructions), and recommend that you refer to installation videos on Youtube and TikTok when replacing the screen to ensure that you can successfully complete the process. (Please note that replacing a phone screen requires certain skills and experience, so if you are not familiar with the process, consider seeking professional technical support.). ?Applicable Situations?Our screen repair kit does not include OLED screens and digitizer touch screens, and is only suitable for cases where the external screen of the phone is damaged. If the outer glass of your phone is damaged but the display is still functioning, you can purchase a replacement. ?Compatible Models?This glass screen replacement kit is compatible with Samsung Galaxy S21 Ultra. When your phone screen is cracked, our screen replacement part can help you quickly repair it and make your phone look like new again.