https://play.google.com/store/apps/details?id=com.mark.bletestperipheral Bluetooth BLE Light/Controller. use 2 phones: 1 as light,another as controller. step: 1. use 2 android phone, install app both. 2. open app. enable bluetooth, one app as "light", another as controller. 3. on controller, select your light's device name. 4. control the light via controller. 5. enjoy the light.