Sprint (NYSE: S) led the wireless industry as the first nationwide wireless operator to openly embrace and welcome new mobile virtual network operators (MVNOs) onto its network. Leading up Sprint's wholesale effort is Karen Freitag, vice president of global sales and business development in the wholesale and emerging solutions group, which contributed over $1.5 billion in revenues in 2013. FierceWireless Editor in Chief Sue Marek recently caught up with Freitag to talk about the wireless operator's MVNO business and growing M2M opportunities. Read more