Visit the app store on your phone and look for the NFL official NFL app.

Once it is installed, start it up to your phone.

Sign-in is available located in the top-right corner on the app's display.

You can either first create an account , and then sign in or login using your credentials from your current Nfl.com/activate account.

If the login succeeds Once the login is successful, you will be able to log in and your NFL Network will be activated on your phone.