From what I understand i maybe wrong the flip phones where not as bad but they made old flips virtually useless because they are getting rid of the old technology 3G and previous and have everything max radiation 5G.
I kept my phone in my pocket for a couple years and i would get muscle spasms in that location. Now i dont keep phone in my pocket and stick it under truck seat or in glove department.
I only have one because of business. To monitor for customer calls and mainstain schedules and meet at different job sites.
keep the phone away from your body and use speaker phone.
I'm still using blue tooth earbuds to listen to podcasts which might be unhealthy for me so i have to maybe lose that habit too.
Microwave radiation causes inflammation. Chronic inflammation from chronic exposure promotes cancer growth.
A ''heavy use'' of cellphone is correlated with an increase risk of brain cancer.
What is defined as ''heavy use''?
30 minutes per day. Lol.
1 second of sun exposure is 10,000x what you'll get from an entire day of phone radiation.
You don't.
Correlation between heavy cellphone use and cancer ( brain tumor ) :
https://pubmed.ncbi.nlm.nih.gov/21331446/
Follow-up confirming the results :
https://pubmed.ncbi.nlm.nih.gov/20551697/
The higher the cumulate use the greater the rates of brain tumors. Highest correlation for people who started using cellphones before the age of 20.