【 Perfect Compatibility 】 The battery glass replacement kit is only compatible with Samsung Galaxy S21 Ultra 5G SM-G998 (all versions), please verify your phone model before purchasing. 【 Comes with a complete toolkit 】 The product includes a back cover * 1, an instruction manual * 1, and an installation kit * 1. This back cover glass shell is made of high-quality glass and can repair your broken, damaged, or scratched phone. 【Easy to install】 Choose us and DIY by yourself, you will save a lot of money and time. According to the user manual, you can easily disassemble and install the new back cover, enjoying the fun of DIY. 【 New High Quality 】 The finished products are controlled and inspected by professional technicians to confirm the shipment of each item. 【Quality Assurance】 If you have any quality related issues, please contact us through Amazon messaging. Wishing you a pleasant shopping experience!