Diseases, Conditions, Syndromes

How phones can alert you to COVID-19 exposure

More than 8.1 million people in the U.S. have turned their iPhones and Android devices into pandemic contact-tracing tools, but it hasn't been of much use when their neighbors, classmates and coworkers aren't on the same ...

Health

Studies offer no clear answers on safety of cellphone use

Two government studies that bombarded rats and mice with cellphone radiation found a weak link to some heart tumors, but scientists and federal regulators say don't worry—it is still safe to use your device.

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