because the single is much higher speed and transmits a much large amount of data the 'continuous' use of the power stream would not be necessary for a phone call. the data streamed would be pulsed in smaller bursts of high speed signal that would be order of magnitudes less in duty cycle of the signal.
You are ignoreing that a much lower duty cycle for the data is possible because the data is so much faster.
Also because it is directional it will only be pointed at the recieving device which also results in far lower radiation levels. Omnidirection cell phone antennas simply bathe the whole environment with equal levels of radiation in directions along a plane (antenna, bipole antenna are omnidirectional).
so you ignore:
5G has a directed beam
5G can use a mush less power duty cycle for the signal.
5G can, and should be, designed with automatic shunting. If there is no recieving antenna than the signal should not be transmitted. That way it cn't be used as a weapon.
5G is a slide. We simply just need to pay attention and monitor it's use.
Prefer fiber to the home. Prefer Cat-7 (Cat-5 is useful, Cat-7 is shielded, and rated for higher speed.
People: data isn't a constant stream. Networks request data in a bursty way.
if you have 1000M Cat-7 to your computer, you aren't putting out 1Gig of Data every second . . .