Even though the downsides of 5G are clear when considering how easily MM waves can be blocked, or less clear considering radio frequency (RF) exposure limits, 5G still has plenty of worthy benefits, such as the following:
use of higher frequencies;
enhanced mobile broadband;
a lower latency of 1 ms;
higher data rates, which will enable new technology options over 5G networks, such as 4K streaming or near-real-time streaming of virtual reality (VR); and
the potential to have a 5G mobile network made up of low-band, midband and MM wave frequencies.
Wireless network operators in four countries -- the United States, Japan, South Korea and China -- are largely driving the first 5G buildouts. Network operators are expected to spend billions of dollars on 5G capital expenses through 2030, according to Technology Business Research (TBR) Inc., although it is not clear how 5G services will generate a return on that investment. Evolving use cases and business models that take advantage of 5G's benefits could address operators' revenue concerns.
Simultaneously, standards bodies are working on universal 5G equipment standards. The 3rd Generation Partnership Project (3GPP) approved 5G New Radio (NR) standards in December 2017 and is expected to complete the 5G mobile core standard required for 5G cellular services. The 5G radio system is not compatible with 4G radios, but network operators that have purchased wireless radios recently may be able to upgrade to the new 5G system via software rather than buying new equipment.
More info: computer systems engineer