You won’t get cancer, but you might catch fire if you keep doing this.
By Gabriela Vătu Nov. 8, 2026 3:00 pm EST FotoHelin/Shutterstock Add Engadget on Google: Google DiscoverYou've probably heard this warning before: Never sleep with your phone under the pillow; your brain will get all the radiation, and you'll develop cancer. Well, a World Health Organization (WHO)-commissioned study from two years ago says that's quite unlikely, so you don't have to worry about cancer if you end up tucking the phone under your head for the night. You should, however, be concerned about your phone overheating and the risks of it causing a fire.
