SMS Keeper

This SMS Keeper is going to backup your SMS on Firebase cloud. This App only need to be installed on the your devices which are able to receive text SMS. The saved SMS history can be viewed by another app which is Password Concierge. https://play.google.com/store/apps/details?id=com.supergigi.passwordconciergeandroid

You are able to see your SMS history on any devices with Password Concierge installed.