Our data networks will soon be even more crowded and congested. There was already a surge in data usage the past few years, thanks primarily to smartphones and tablets. In the upcoming years, not only will the number of devices connected to the Internet rise thanks to the Internet of Things (IoT), the volume of traffic will also increase due to 4K videos and virtual reality. To prepare for all of that mess, carriers are plotting their next gen network technologies. AT&T, for its part, will be putting its eggs in the 5G basket and will start its testing phase this year.