Samsung UA48JU6000RXXP E-Manual page 9

Controlling the TV with your voice
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Press and hold the
appears. When the Voice Recognition icon appears on the screen, speak commands slowly, in a
moderately loud voice, into the microphone on the Samsung Smart Control.
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This function is only supported by the models with the Samsung Smart Control.
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For more information, refer to "Controlling the TV with Your Voice."
button on the Samsung Smart Control. The Voice Recognition screen