If you use the socket for the first time, please connect the socket with WiFi router. Firstly, please ensure your smartphone has been connected with WiFi router, and hold on the on-off key until power on, if the status indicator blue light flashes slowly, which means the socket is in config mode; if not, then please power off the socket and power on again according to the method mentioned before. Secondly, open the client in your smartphone, click 【+】 in the 【Settings】 interface, then input the WiFi password and click 【Setup new socket】. The status indicator keeps on means the socket connected with the WiFi router.