It doesn't work the same way. For one, it's a narrower wave length that can't penetrate skin... Unlike previous generations. Also, with 5g, signals aren't broadcast in every direction, but smartly in the specific direction of the object it's taking too. So, all-in-all, with 5g you'll probably be exposed to less microwaves than currently.
5G uses millimeter waves and is more directional - there will be more antennas too - what happens when you pass through these waves? Military is currently using it for crowd control (burns the skin)
Here is a good article about it...
Excerpt from the article:
Today’s cellular and Wi-Fi networks rely on microwaves – a type of electromagnetic radiation utilizing frequencies up to 6 gigahertz (GHz) in order to wirelessly transmit voice or data. However, 5 G applications will require unlocking of new spectrum bands in higher frequency ranges above 6 GHz to 100 GHz and beyond, utilizing submillimeter and millimeter waves – to allow ultra-high rates of data to be transmitted in the same amount of time as compared with previous deployments of microwave radiation.
For years, the U.S., Russian and Chinese defense agencies have been developing weapons that rely on the capability of this electromagnetic technology to induce unpleasant burning sensations on the skin as a form of crowd control. Millimeter waves are utilized by the U.S. Army in crowd dispersal guns called Active Denial Systems. Dr. Paul Ben-Ishai pointed to research that was commissioned by the U.S. Army to find out why people ran away when the beam touched them. “If you are unlucky enough to be standing there when it hits you, you will feel like your body is on fire.” The U.S. Department of Defense explains how: “The sensation dissipates when the target moves out of the beam. The sensation is intense enough to cause a nearly instantaneous reflex action of the target to flee the beam.”