(Telecompaper) T-Mobile US and Sprint have agreed to merge in an all-share deal, creating a new major player in the US mobile market to rival Verizon and AT&T. Under the agreed terms, Deutsche Telekom will own 42 percent of the merged group, and SoftBank Group will have a 27 percent stake, with the remainder listed on the stock market. The group will be called T-Mobile, with John Legere remaining CEO.