re: How are those contact tracing cellphone updates working out?

They exposure notification is not active on most phones as only a handful of states created apps regardless of if people wanted to turn it on or if people were opposed to turning it on.

More states are expected to use “exposure notifications express” where states don’t have to write their own apps that then be downloaded to phones by users. Users still have to opt in, turn it on (including having Bluetooth on) and approve usage including sending out testing positive. I think Apple & google are saying 25 states so far are saying they will use this newer version.