https://www.cnet.com/news/with-5g-and-sprint-t-mobile-vows-cheaper-wireless-service-than-ever/

The next-generation of wireless technology, known as 5G, is poised to change our lives. Once it actually gets here. 

But how will 5G look and work when it does? T-Mobile is aiming for broad coverage and has committed to building a nationwide 5G network by 2020.