what are the main issues with 5G deployments, is the ability to penetrate buildings and building materials with the signal. With high frequencies, line-of-sight between the transmitter and receiver becomes more and more critical. Penetration is achieved at lower frequencies, however, the ability to deliver high-speed data becomes problematic. UK carrier EE is using a combination of high frequency 5G on the back hall, and then lower powered 700 MHz to penetrate the last mile. The only other option would be for building owners to install 5G DAS solutions to bring the signal inside, and inside signals outside. "Can you hear me now?"