5G radiationAs of 2019, there is limited 5G cellular availability, but carriers are planning nationwide coverage as soon as they can build out the required infrastructure. By 2023, coverage is expected to be ubiquitous in the U.S. China is also racing to be the first country to have nationwide 5G access.
High Frequencies May Be Harmful
The issue is the 5G frequencies, which are much higher than 4G cellular and Wi-Fi (see 5G frequency bands). No studies have been done on the effects of 5G on humans, and many people are extremely concerned that we are heading for a calamity. Time will tell. See electromagnetic hypersensitivity.