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Chromecast with Google TV requires internet connection to work. Take a look at this link for the setup requirements and guide on how to setup Chromecast with Google TV and Voice Remote: https://support.google.com/chromecast/answer/10109990
Sorry, there was a problem. Please try again later.Yes It Does Need Internet and if you want to cast from your phone both needs to be connected to the same Wi-Fi Network
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