I found that i could not get FINDTHINGS (SMARTTHINGS) FROM SAMSUNG to work on the Brax 3 cellphone.
I found a app that will allow it to work called UTAG. It will uninstall the app on your phone then re-install the app under its control. The APK PLUS app also bypasses google crap to download apps! https://www.apkmirror.com/apk/mighty-quinn-apps/utag/utag-1-0-8-release/utag-1-0-8-android-apk-download/