Enter the code shown on your TV or device to register it with your Prime account.
Open the Prime Video app on your TV or device.
Select "Register on the Prime website."
Your registration code appears on the left of the screen.
Using a computer, go to http://primevideo.com/mytv. Sign-in with an active e-mail address and password or click Create your Amazon account. Use the code written down on step 3 to link the device with the Amazon account. . Select Continue
It allows its subscribers unlimited streaming of movies and TV shows. Most of the content available on Amazon Instant Video can be streamed for free on with an Amazon Prime membership. www.amazon.com/mytv.
Find the 5-character registration code on your device by selecting Register Your Device from the Amazon Instant Video home screen or the Help screen. From your computer, go to Register Your Compatible TV or Device. Enter your registration code in the text box. Click Continue.
Go to the Google Play app store on your device and download the Amazon Prime Video app.
Open the Amazon Prime Video app and sign in with your Amazon Prime or Prime Video account.
Choose a movie or TV Show and start streaming directly from the app.