Solutions:
First, try to reset the bulb:
Use the power switch to turn on and off lights for 5 times continuously, each time for 2 seconds, turn off 2 seconds, the light bulb appears color light alternant change, appear white light, represent reset success, do not turn off the light at this time, reset success, re-open the App, at this time will automatically prompt found "Yeelight LED bulb ****", then follow the installation can.
If the App can not find yeelight colored light bulbs, check the following:
1. Both the phone and the light bulb are connected to the same WiFi and the WiFi network is normal.
2. The WiFi connected to the bulb only supports 2.4G,not 5G.
3. The name and password of the WiFi signal of the router cannot contain special characters.
4. The router shall turn on DHCP service.
5. The version of android mobile system is Android4.0 or above, and the version of apple mobile system is iOS 7 or above,with WiFi function.
6. Check the router's wireless access control or wireless MAC address filtering and black and white list settings, cancel the above Settings and try again to connect the bulb.
