Can't update to 16.1 on android. Keep getting error.
App not installed as package conflicts with existing package
I did have to back up my saves and uninstall/reinstall but it is working now.
On with the story!
Your stock android file explorer can't find the save files, but there are plenty of explorers in the play store that can, even without rooting. I've had luck with one called X-plore. Start at Android, then data, find the game files, (in this case, it's Vertigo.crimson.high), copy the save folder somewhere temporarily. Then reinstall everything, and paste your save file back in the original location.