In today’s digital age, many people use their cell phones in various settings—during commutes, at dinner tables, and even in doctor’s offices—often without a second thought to hygiene. However, recent research reveals that these ubiquitous devices are significantly dirtier than most users might expect.
According to a survey by Deloitte, Americans check their phones approximately 47 times a day, creating numerous opportunities for germs to transfer from hands to devices. Emily Martin, an assistant professor of epidemiology at the University of Michigan’s School of Public Health, notes, “Because people are always carrying their cell phones, even in situations where they would normally wash their hands, cell phones tend to get pretty gross.”
A recent study highlighted alarming statistics, finding more than 17,000 bacterial gene copies on the phones of high school students. Furthermore, scientists at the University of Arizona reported that cell phones carry ten times more bacteria than most toilet seats.
The presence of harmful bacteria on cell phones is a growing concern, as everyday surfaces can harbor various environmental contaminants. “We’re not walking through a sterile environment, so if you touch a surface, there could be something on that,” warns Susan Whittier, director of clinical microbiology at New York-Presbyterian and Columbia University Medical Center.
One of the worst places to use a phone is in the bathroom, according to both Martin and Whittier. When toilets flush, they can aerosolize germs, which may end up on phones, including harmful fecal bacteria like E. coli. Martin cautions, “Taking a cell phone into the bathroom and then leaving with it is kind of like going in, not washing your hands, and then coming back out. It’s the same level of concern.”
As cell phone usage continues to rise, experts urge users to be more mindful of cleanliness to avoid health risks associated with bacterial contamination. Simple practices, such as regular cleaning of devices and avoiding phone use in high-germ areas, can significantly reduce exposure to harmful germs.