For Samsung Galaxy S21 5G Screen LCD Display Touch Panel Assembly with Installation Tool - Easy Replacement Phone Screen Repair Kit Installation Precautions : 1.Safety First : Ensure the phone is powered off and remove the SIM card and SD card (if applicable) before starting. 2.Static Protection : Operate in a static-free environment or use an anti-static wrist strap to prevent damage to electronic components. 3.Patience and Care : Disassemble gently, avoiding excessive force that could damage other parts. 4.Keep Clean : Thoroughly clean the phone frame with the provided cloth before installation to ensure no dust or debris affects adhesion. 5.Test Before Final Assembly : After installation, test the screen functions (display and touch) to confirm everything works before fully reassembling the phone. Support: If you encounter any issues, please contact our customer service team for support. Right now and bring your S21 phone back to life! Enjoy the satisfaction of DIY repair while saving both time and money.