I use a flip phone, no internet to it. I never ever put it up to my head when I make a call, always have it on speaker and away from my head. I've known since wireless phones first came out that the frequencies were bad for human health, this has been a long well known fact over the years, the problem is - as usual - almost nobody paid attention or cared. So it's going to keep getting worse and worse until people start dropping dead with brain tumors.
My recommendation: if you can manage it, use landline phones as much as possible. If you don't have landline, go for a cheap burner or old flip phone or jitterbug. Don't hold the phone up to your head, put that shit on speaker and talk from a distance.
Wifi is just as bad which is why I won't use any wifi internet.
