Hancock: 'Upgrade' may be needed to access NHS Covid app

The Health Secretary, Matt Hancock, has told BBC Breakfast that people may need to "upgrade" their phones in order to access the government's new NHS Covid-19 app.

It follows criticism after some people with iPhone 6 and older versions of Apple's handsets said they couldn't download it.

The contact-tracing app instructs users to self-isolate for 14 days if it detects they were nearby someone who has the virus.