This is the original screen for Samsung Galaxy S21 PLUS, which can replace your broken, black dot, line, burn mark, and malfunctioning screen. Make your phone look brand new. We strongly recommend that you watch a repair video online before purchasing, so that you can briefly understand how difficult the process is and what specific precautions need to be taken. You can search for 'For Samsung Galaxy S21 PLUS Screen Replacement' on YouTube for tutorial videos on how to replace it. After watching the video, based on your understanding of screen replacement, decide whether to replace it yourself or find a professional phone repairman for replacement.