Compatible Device - For Samsung Galaxy S21 Ultra 5G G998 All Carriers. No for S21 / S21+ /S21 Plus / S21 FE.Please check the Model of your phone before purchasing it. Function - This Galaxy S21 Ultra back glass replacement will repair your cracked, damaged, scratched Galaxy S21 Ultra 5G broken. Restore the device back to new one. It is very cost-effective to change one by yoursel. Installation - The camera lens and adhesive are pre-installed.The instruction manual is not included. We suggest to find the installation video on YouTube. Following the video step by step. Don't recommend to install it without any experience. We won't responsible for any damage due to improper operation. About the Product - Back glass battery door for Samsung Galaxy S21 Ultra. The product is tested before shipping out. No for S21 /S21 Plus. Package Includes - 1x Back Cover Glass Housing Door For Samsung Galaxy S21 Ultra + Tools Kit. With all quality related issues. Please feel free to contact us, and we will reply within 24 hours. ASIN B09TW6D5FS Brand PCTC Color Phantom Black Finish Glossy Pattern Solid Unit Count 1.0 Count Item Weight 10 Grams Manufacturer PCTC Model Number DK_SX_S21U_JKHG_Hei Item Dimensions 0.39 x 0.39 x 0.79 inches Mfr Part Number DK_SX_S21U_JKHG_Hei Number of Items 1 Compatible Devices Samsung Galaxy S21 Ultra 5G G998 Enclosure Material Glass Water Resistance Level Not Water Resistant Compatible Phone Models Samsung Galaxy S21 Ultra