Critical mass of Android users 'needed for success of NHS contact tracing app'

Experts point out shortcomings of coronavirus contact tracing app Coronavirus - latest updates See all our coronavirus coverage The NHS's contact tracing app will fail unless sufficient numbers of Android phone users sign up, experts who have examined its trial use on the Isle of Wight have warned. They say that NHSX, the digital arm of the health service, is relying on an "Android herd immunity" strategy to overcome shortcomings in the app. A critical mass of Android users will be required to e...