Not to add any confusion, but you can have the premier upgrade on two lines, My wife and I do. Her phone is he main phone, and they put it on the premier upgrade plan 2 years ago, and mine has been on it for at least 5. I have been changing my phones out every year, and she has the last 2. I have the $99 unlimited plan, and she is on the $69 unlimited data plan. We have been customers for over 14 years.
The reason you have premier on both lines is you are not sharing minutes or on a family plan -you have two standalone lines so both lines are eligible in that scenerio.
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