【Compatible models】：For Samsung Galaxy S21 Ultra SM-G998U SM-G998U1 SM-G998B SM-G998B/DS SM-G998W SM-G998N, Please confirm your phone model before purchasing. If you purchase the wrong model, the screen will not work on your phone and it will delay your time and affect your mood. 【OLED High quality】： This screen is a high-quality OLED screen replacement kit for Galaxy S21 Ultra. All of our products undergo rigorous testing before shipment. We guarantee to provide high-quality display touch screen replacement components for your device, providing a clear visual experience. 【Purpose】： If your Galaxy S21 Ultra has image display issues, such as bad pixels on the screen, unresponsive touch screens, cracked screens, physical cracks or scratches on the glass, or false color problems, it can perfectly replace your malfunctioning screen and make your phone feel like new. 【Screen installation】： Our screen comes with a frame and comes with free tools, so its installation is simple. You can find installation videos on short video platforms. 【Attention 】： The display size of this S21 Ultra OLED screen is 6.78 inches, and the display area of the screen is smaller than the original screen. But the quality of this S21 Ultra OLED screen is close to the original screen, with fingerprint . The quality of OLED screens is better than INCELL screens. All screens are of high quality and we will test them before shipping. 【after-sale service】： After receiving the package, please check if the screen is damaged or broken. 2. Please test the screen before installation. If there are any issues with the screen, please contact me promptly. Due to the time difference, I will reply within 24 hours and handle the issue for you.