Good question! I know many are concerned about this. Cell phones use high frequency radio waves which are sometimes called “microwaves”. I believe this scares people. However, these waves are not quite as “micro” as those used in microwave ovens. That is, they are non-ionizing. Non-ionizing radio waves sometimes also called “radiation” cannot cause mutations in the oncogenes which can cause cancer. But I think I’m going to write about this. Thanks for the good idea!!! 😊