Google Fi used to have the simplest billing around: A single flat rate, plus however much data you used. It was disruptive when it landed six years ago, flexible in a way that saved some customers quite a lot of money, but one size doesn't always fit all. Back in 2019, it rolled out an "Unlimited" plan with extra flat-rate bells and whistles. Today that $70/mo plan has been renamed "Unlimited Plus," and it's joined by a new $60/mo "Simply Unlimited" plan — though the value of either in 2021 is a question.

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