France orders Apple to halt iPhone 12 sales due to high radiation levels

All mobile phones use radios; if they didn't, then they wouldn't work as wireless phones. There are country-specific regulations on the power and radio frequencies used by these phones, so they don't generate excessive heat or ionize, both of which (but especially ionization) would be bad.

Contrary to what the health influencers on Instagram say, commercially available mobile phones have zero effect on human health. That said, apparently the iPhone 12 was caught violating France's limit on how much power its radio was using. How it took them years to notice is not mentioned anywhere.