One of the ways T-Mobile and Sprint won federal regulators’ approval for their $26 billion merger was by agreeing to sell off one of Sprint’s prepaid brands, Boost Mobile, to Dish Network. This change, which could happen by April 1, could affect the 72 million people who have prepaid plans in the U.S. Analysts say the move could trigger a price war between the brands and could also eventually mean price increases.

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