“We are very interested in that,” Chief Marketing Officer Mike Sievert told Re/code. “We think the Metro PCS customer would be as well.” [...]MetroPCS had approximately nine million customers at the time of its acquisition by T-Mobile, and the carrier now operates as a separate brand running on T-Mobile's network in an expanded set of markets. T-Mobile has also reclaimed substantial portions of MetroPCS's former spectrum for use in enhancing the overall T-Mobile network.
Part of the challenge is finding an attractive way to make it affordable enough for all of MetroPCS’s customers, many of whom have tighter budgets and some of whom might not have good enough credit to qualify for device financing.
iOS 9.3 is coming in the Spring and will introduce Night Shift as well as a number of other new features.