Besides cell phones, what are other sources of rf energy that cause cancer?

Proof of cell: Phone link not yet in, microwaves are relatively safe, but radiation is in the electromagnetic spectrum and is a clear cause, and u-v light is part of the spectrum causing skin cancers. All seem to demonstrate direct links to dose and time of exposure. X-rays seem to have no threshold, but very low doses are very unliklely to lead to individual harm, but to a population, a small number will.

Cell phones??: Cell phone radiation is low-frequency & low energy. It is actually nonionizing radiation. Unlike high frequency wave ionizing radiation, it is doubtful it can cause cancer in humans. Cell phone radiation was however, shown to ^ risk for developing schwannomas in rats & gliomas in other animal studies. REF: https://www.mskcc.org/blog/do-cell-phones-cause