To register your device for Amazon Prime Video using the Amazon MyTV service, follow these steps:

• Connect Your Device to the TV: Make sure your compatible device, such as a smart TV, streaming media player (e.g., Amazon Fire TV, Roku, Apple TV), or gaming console, is properly connected to your TV and powered on.

• Access the Amazon Prime Video App: On your TV, navigate to the Amazon Prime Video app. If it's not pre-installed, you can download it from your device's app store.

• Sign In or Register: If you already have an Amazon Prime account, sign in with your Amazon credentials (email and password). If you don't have an account, you'll need to create one by following the on-screen instructions.

• Get the Activation Code: After signing in or registering, the Amazon Prime Video app on your device may provide you with a unique activation code. Note down this code.

• Go to Amazon.com/mytv: On a computer or mobile device, open a web browser and go to amazon.com/mytv by typing in the URL or searching for it in a search engine.

• Sign In with Your Amazon Account: If you're not already signed in, you will be asked to log in with your Amazon account credentials on the Amazon.com/mytv website.

• Enter the Activation Code: On the Amazon.com/mytv website, you will be prompted to enter the activation code you noted from your TV screen. Ensure that you enter the code accurately.

• Device Registration: After entering the activation code and signing in, click on the "Register Device" or a similar button on the Amazon.com/mytv website. This action will link your device to your Amazon Prime Video account.

• Confirmation: You should receive a confirmation message on your TV screen, indicating that your device has been successfully registered.

• Start Watching: Your device is now registered, and you can start streaming Amazon Prime Video content on your TV.

The exact steps and screens may vary depending on your specific device and the version of the Amazon Prime Video app, so be sure to follow the on-screen instructions provided by the app on your TV. If you encounter any issues during the registration process, ensure that your activation code is entered correctly and that your device is connected to the internet. If you continue to face difficulties, consider reaching out to Amazon customer support for assistance. 

To connect your device to Amazon Prime Video using Amazon MyTV, you typically don't physically connect your device to the TV, but rather link your device to your Amazon Prime Video account. Here's how to do it:

• Access Amazon Prime Video App on Your Device: Make sure the Amazon Prime Video app is installed on your device. If it's not already installed, you can download it from your device's app store.

• Open the App: Launch the Amazon Prime Video app on your device.

• Sign In or Register: You'll need to sign in to your Amazon Prime account if you already have one. If not, you can create an account by following the on-screen instructions.

• Get the Activation Code: After signing in or registering, the Amazon Prime Video app on your device will provide you with a unique activation code on the TV screen.

• Go to Amazon.com/mytv: On a computer or mobile device, open a web browser and go to Amazon.com/mytv.

• Sign In to Your Amazon Account: If you're not already signed in, you'll be prompted to log in with your Amazon account credentials on the Amazon.com/mytv website.

• Enter the Activation Code: On the Amazon.com/mytv website, enter the activation code displayed on your TV screen.

• Device Activation: Click on the "Register Device" or similar button on the Amazon.com/mytv website. This action will link your device to your Amazon Prime Video account.

• Confirmation: You should receive a confirmation message on your TV screen, indicating that your device has been successfully linked to your Amazon Prime Video account.

• Start Watching: Your device is now connected to Amazon Prime Video, and you can begin streaming content.

Please note that the steps and screens may vary slightly depending on your specific device and the version of the Amazon Prime Video app. Ensure that your device is connected to the internet and that you enter the activation code correctly. If you encounter any difficulties during the setup process, consider contacting Amazon customer support for assistance.

No, you cannot use the same Amazon MyTV activation code on multiple devices. Each activation code is unique and tied to a specific device. If you want to use Amazon MyTV on multiple devices, you will need to generate a separate activation code for each device. The activation process is designed to link a single device to your Amazon Prime Video account to ensure that content is being accessed by authorized users.