Is 5G safe?
Analysis by BBC Reality Check
Some people have questioned whether there are health risks from 5G, but experts and regulators say there is no evidence of danger.
Similar fears were expressed around earlier mobile internet and wi-fi.
More than 200 scientists appealed to the EU to halt the roll out of 5G, saying that electromagnetic fields may be harmful to humans and the environment, and could increase cancer risks.
But the EU says exposure from 5G will be far below limits set by the International Commission on Non-Ionizing Radiation Protection (ICNIRP).
“There has been no evidence to suggest that electromagnetic waves from mobile phones and networks are bad for your health,” says Prof Malcolm Sperrin, Director of the Department of Medical Physics and Clinical Engineering at Oxford University Hospitals NHS Trust.
He says a causal link between mobile phone use and cancer in humans is unproven.
5G technology is new but experts believe it poses no greater risk than earlier mobile systems.