My portable phone does that when I push a button in the base unit.

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There is no need to use the push button on the side of the PTV3000 unit to switch between Widi and Miracast modes.

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Push and hold the WPS button on the side of the PTV3000 unit for more than 5 seconds.

ENGADGET: Netgear PTV3000 updated, supports Miracast-ready Android devices