Where or how to enter code for amazon.com/mytv on smart TV?

You can watch prime video online on smartphones, tablets, computers and smart TVs. To watch prime video online, you will need to enter the 6 digit Amazon activation code at www.amazon.com/mytv/primevideo.com/mytv. To sign in to your amazon account or create a new one using email and password, you can watch amazon prime episodes from your device.
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amazon.com/redeem check balance
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