1/ Make sure your device and your bulbs are connected to the same WiFi network.
2/ Make sure your bulbs are running the latest firmware.
For LIFX: http://updates.lifx.co/
For Philips Hue: Use the official Philips Hue app, and install the bridge update if there is one.
3/ Philips Hue: make sure the 3 blue LED are lit (constant light, NOT blinking). If one of them is blinking, it's likely that your bridge is not connected to the internet.
4/ If your issue still persists, contact us.