The biggest pet peeve of many Google Now users has always been the fact that you can't toggle basic system functions with voice commands. In fact, this was such an annoyance that folks even went so far as to apply root mods to get the functionality.
Well, we're happy to report that Google has finally integrated this functionality into Google Now. Voice commands are now capable of toggling Wi-Fi, Bluetooth, and even the LED flashlight on Android 5.0 Lollipop devices.
No setup is required to access these features on your Lollipop device. Just say "Okay Google," followed by the command. "Turn off Wi-Fi" will disable your Wi-Fi radio, "Turn on flashlight" will fire up your LED torch, and so on.