This couldn’t be easier. Just press and hold the Windows button to
initiate the feature, press the speak button and then bark at your
Lumia. There are a number of voice commands to perform specific tasks
(you can find a selection of them
here),
but once mastered you’ll find it useful as well as pretty cool. You can
also use the voice-command feature to dictate an email. Just tap the
Speak (the microphone icon) button when in the body copy area of a
message and babble away.