What a mess! 1st - registration: app kept changing my birth date. I finally left it wrong. 2nd - app couldn't recognize QR code on my test kit (that has never happened), so did manual entry per app. 3rd - "risk" info page: the "Next" icon would never work, so that was the end...couldn't go any further! My phone is Samsung Galaxy S9, running Android v. 10 update, so your app should work. This is useless & makes the gov't-issued test kits useless, as well. Needed this to go to friend's funeral.