Phone radiation may cause cancer. You may want to keep your cellphone out of reach when you sleep at night. Or not carry it around with you every minute of the day.
Article: California advises against keeping your phone in your pocket
https://www.yahoo.com/tech/california-advises-against-keeping-phone-190200089.html
It only took 40 plus years to declare that cigarettes may cause cancer. Maybe in the future, cellphones will come with a Surgeon General warning on them... lol