Tips1. Please choose the right part before placing an order. 2. Special tooling is required when disassembling and reassembling your device 3. The installation of any new parts should be done by a qualified person. We are not responsible for any damage caused during installation.About the product1. High quality 1.4x3.5mm screws / bolts for Samsung mobile phones. 2. Repair and fix your broken or unusable item with it. 3. Each item has been checked and in good condition before shipping. 4. Professional installation is highly recommended. We will not be responsible for any damages to your cellphone/mobile phone that you may cause during the changing of replacement parts.