There is ongoing debate and research on whether cell phones can cause brain cancer. The majority of studies conducted to date have not found a strong link between cell phone use and an increased risk of brain cancer. However, some studies have suggested a possible association, and more research is needed to fully understand the potential risks.

The World Health Organization's International Agency for Research on Cancer (IARC) has classified radiofrequency electromagnetic fields, such as those emitted by cell phones, as possibly carcinogenic to humans. This classification is based on limited evidence from human studies and on animal studies that have shown an increased risk of certain types of tumors with high exposure to radiofrequency electromagnetic fields.

It's worth noting that the strength of radiofrequency radiation emissions from cell phones has been decreasing over time and newer phones have less emissions than older ones. Additionally, most studies have focused on long-term heavy usage and potential risks are yet to be established on moderate or occasional usage. It is important to note that more research is needed to fully understand the potential risks associated with cell phone use, and people should follow the recommendations of health and safety agencies when it comes to cell phone usage.