my friends told me that cell phones actually use psychic power from your brain and that is how we are able to have conversations without using wires or radios. is this true?

You read about all the magnetic waves that cell phones radiate, and how it is bad for your body (especially your brain.) But what are the worst case scenarios for using a cell phone for a long period of time? Do you get cancer? Less intelligent?

Also, is it true that the lower the battery of the cell phone, the more radiation it emits?

One final question, is it harmful to keep your cell phone next to your testicles/penis (scientific terms I’m using)?

Thanks.