A:AnswerRunning two hue hubs is a serious pain in the neck. Id recommend using a single hub and ensuring that you have sufficient wifi coverage to reach all of your bulbs in lieu of running two hubs.
A:AnswerYes....I operate them with my smartphone and also with my iPad. This is a great set!! They are expensive but awesome! I went back and bought a second set!!
A:AnswerHue devices don't use Wifi but other frequencies in the 2.4 Ghz range through Zigbee (chip and antenna). The hue bridge has to be connected by LAN wire to your router and you will need Wifi to connect your phone to the bridge through your router to send commands via Zigbee to the lights.
A:AnswerPhilips Hue 2.1 version of Bridge unit. It updates the firmware when installed to the latest in both bridge, bulbs, and switch. Works perfectly. So much FUN!