User can use “set default” to save the current state as the power-on state.
User can also turn on “auto state saving” feature to let the bulb remember it's current state automatically,
so the power-on state will be the last saved state.
1) Your WiFi router is working and can connect to internet. Note: Yeelight LED bulb doesn't support 802.11ac (5G Hz), so please choose 2.4G when doing the initial connection.
2) Your smart phone can access the internet through your WiFi router.
3). Make sure Yeelight Application is installed properly on your smart phone. It needs Android 4.0 and above or iOS7 and above.
4). Make sure Yeelight LED bulb has not been connected before, otherwise, you need to follow the instruction to reset the bulb firstly and try again.