USA FCC is investigating popular cellphones for radiofrequency radiation.

https://www.chicagotribune.com/investigations/ct-cell-phone-radiation-testing-20190821-72qgu4nzlfda5kyuhteiieh4da-story.html
https://www.chicagotribune.com/investigations/ct-cell-phone-radiation-testing-methodology--20190821-whddrljk6fbmxoqh25u5t7lkb4-story.html
 
The Phones Emitting the Most & Least Radiation
https://onlinedatingsoundbarrier.blogspot.com/2018/09/the-phones-emitting-most-least-radiation.html

New Major Cell Phone Radiation Study Reignites Cancer Questions (USD25 Million cost)
https://onlinedatingsoundbarrier.blogspot.com/2016/06/new-major-cell-phone-radiation-study.html