Do some research. Nobody has installed a Covid tracker. What both Samsung and Apple have done is provide an API for app development in regards to contact tracing. This is great for 3rd party developers and even governments.
But 5G controlling your brain is real. 🤣
S9+ on AT&T. "Can't install app. App not optimized for use with secure folder" has been annoyingly constant for the last 3 weeks! I'm ready to toss this phone! Help, Samsung!