T-Mobile’s new ‘Flex’ plans bring phone upgrades to prepaid subscribers

T-Mobile is bringing more of the perks of postpaid phone plans to its prepaid lineup. The company announced new plans for its prepaid business, Metro by T-Mobile, that come with a free phone for signups and ongoing access to the same trade-in deals that it offers new customers for some devices.

There are three plans in the new Metro Flex lineup: Flex Start ($50 per month); Flex Up ($60 per month); and Flex Plus ($70 per month). The company...