The two reviews were published in the Journal of Exposure Science and Environmental Epidemiology last week.
It's the latest move in the race to provide widespread 5G coverage in New Zealand.
They've won exclusive access to a 5G testing lab - and a major advantage over their international competitors.
Fewer than a quarter of New Zealanders are confident they know enough about 5G.
People seem to only report ill-effects from cellphone towers if they already believe they're harmful.
Research shows 5G could be worth as much as $8.9 billion a year to the New Zealand economy.
"Traditionally, I've had to travel to find the weirdest stuff."
Telcos are blaming social media for a spate of attacks on cellphone towers.
Sixteen cellphone towers have now been attacked by arsonists in recent weeks.