Telefonica (TEF) steps up its challenge to Amazon's (AMZN) Kindle by teaming up with Grupo...

|About: Telefonica S.A. (TEF)|By:, SA News Editor

Telefonica (TEF) steps up its challenge to Amazon's (AMZN) Kindle by teaming up with Grupo Planeta, Spain’s largest publisher, to expand the content available for the "Movistar Ebook" reading device. However, strategist Francisco Salvador says the operator will need to invest heavily to challenge the incumbents.