Is it bad to have my phone under my pillow at night

At night before I go to sleep, I put my focus on and my relaxation music because I can’t sleep without it. But recently my dad has told me I can’t listen to it unless I u se headphones but that’s a horrible idea for when I’m sleeping so I put it under my pillow and then only I can hear it. But people have been telling me things like it can overheat, you might break your phone, you can get radiation from that, you can get cancer and your face might burn off. So I would like some help.

Thanks, Bailey