We're just back from Mobile World Congress in Barcelona, Spain, where more than 85,000 attendees from over 200 countries gathered to discover what the 1,800 companies present had to showcase. As expected, some of the show's biggest themes focused on the Internet of Things, the mobile cloud, Big Data, 4G LTE and wearable devices... After speaking to a cross-section of service providers, it became clear that many operators are already starting to leverage their investment in existing 4G LTE infrastructure... more