Samsung screen for replacing your phone's factory screen in case it broke or stopped working. It comes with a frame, making it easier to install, as you don't need to detach the old screen from the frame to use it. 

By removing the old screen and frame set, you place the new one with the help of the appropriate tools. In many cases, the old frame is worn out and needs to be replaced. It is compatible with the Galaxy S21 Ultra. If you are not familiar with such repairs, it is recommended to consult a specialized technician as any mistakes will result in problematic screen operation.