Its Verizon Wireless venture with Vodafone Group Plc
Verizon posted a fourth-quarter loss of 71 cents per share compared with a profit of 93 cents a share a year earlier.
Excluding a hefty non-cash pension-related charge, it earned 52 cents per share.
Revenue rose to $28.4 billion from $26.4 billion in the year-ago quarter and compared with analyst expectations for $28.39 billion according to Thomson Reuters I/B/E/S.
(Reporting By Sinead Carew; Editing by Derek Caney)