(Telecompaper) Japan's Softbank Group said it has agreed to fully sell US mobile services unit Brightstar for an undisclosed amount to Brightstar Capital Partners (BCP), a private equity firm formed in 2015 by a former executive at Brightstar. Under the terms of the deal, Softbank will get cash and a 25 percent share in BCP. The transaction, subject to the usual approvals and closing conditions, should close by end March.