If you're an Xfinity customer, you may be eligible for free or discounted access to Peacock Premium. Here's how to login Peacocktv.com/tv with your Xfinity credentials: Step 1. Visit customer.xfinity.com/activate-peacock and sign in with your Xfinity username and password. Step 2. Select Activate Peacock Premium and input your email address. Step 3. Set up a...