For Samsung Galaxy S20 Ultra 5G -G988B -G988N -G988U -G988WTips for installation:1. Replacing the battery or the screen panel may require some tech skills, you may need to pay some fees for technician assistance.2. The connecting points on the battery and screen panel is very fragile, be more careful when replacing it, make sure your hands are dry when install the battery or the screen.3. Check if the battery or the screen works well by connecting the cable before assemble your phone.4. Do not throw out the packaging box, keep it for at least 30 days if you got any issues, so that it would be more convenient for us to help you.Contact usSend us a message on Amazon whenever you have questions or get any issues with our product, our customer service team will answer you within 24hrs, your patience is highly appreciated.