@SquirrelFieldIW @Conservatives @UKLabour Your phone needs to be on iOS 13.5 or above. This is because the app needs the Exposure Notification framework developed by Apple and Google, which is only available in these versions.

There’s a
bit more info here: https://t.co/6tTsBTw6M9

from http://twitter.com/NHSuk/status/1316005972188508160