The SIM Card Connector keeps the SIM Card Tray secured and holds all the connections for the SIM card. This is vital to connect to your mobile network. If this component gets damaged, you won t be able to connect to any mobile network. To get it working again, you have to replace the original part with this brand new one. This high-quality replacement will get your phone working like new again, allowing you to call, text, and use LTE data.