When you update the games version, your save files should be still available. If you're changing your phone, you need to transfer the files from "android/data/com.dbpanda.betweenhumanity/files/saves" to your new device :)
Thank you, I would also like to say the story is so well made and I can't way to play more.
Glad I could help and thank you very much! More is in the making! :)
