Switching from T-Mobile One Amplified to Magenta Max
So I have a question switching plans. I am currently on the T-Mobile One Amplified special plan pricing through my mother's UPS discount scheme (I believe it was a family plan discount). Since then, T-Mobile discontinued the T-Mobile One and One Amplified plans and updated to their Magenta plans. Of course we still are on the old plan with that plan's benefits but I was wondering if we can update our plan to the Magenta Max plan at no additional cost or changes to our bill, especially since the Magenta Max has better features compared to our current T-Mobile One Amplified plan. How can we make the switch if we want to and will we be charged additionally? Do we have to makethe change through UPS? Gracias.