ToplineT-Mobile will buy most of U.S. Cellular’s operations in a deal valued at 4.4billion,bothcompaniesannouncedTuesday,thelatestbillion−dollartransactionbythewirelesscarrierasitexpandscoveragetomillionsofmorecustomers.Thewirelesscarrierwillassumebillionsofdollarsindebtaspartofthetransaction.GettyImagesKeyFactsThedealwillincludeacombinationofcashandabout2 billion in assumed debt, T-Mobile and U.S. Cellular said in a joint statement. T-Mobile will acquire ...