I have found several articles that claim you can access and even alter files of your apps from your iPhone that are stored in the iCloud without jailbreaking the iPhone. A given example article is for the game Final Fantasy IX that allows you to save and load to and from the iCloud: https://steamcommunity.com/app/377840/discussions/0/142260895144577747/
I wanted to try this, but it's not working. It's not working for any app, to sum it up. Here are the steps that I did:
I enabled iCloud in my iPhone and uploaded the save game within the game. To make sure everything is uploaded properly, I went to System Preferences > iCloud > Manage on my MacBook:
I can even see there is a stored save game file when I go Preferences > My Name > iCloud > Manage Storage > FINAL FANTASY IX > FF9_SaveDocument on my iPhone:
Now I opened the terminal in Mac OSX:
marty@MettBook:~$ cd Library marty@MettBook:~/Library$ cd "Mobile Documents"/ marty@MettBook:~/Library/Mobile Documents$ cd iCloud~com~square-enix~final-fantasy-ix-ww/ marty@MettBook:~/Library/Mobile Documents/iCloud~com~square-enix~final-fantasy-ix-ww$ ls Documents/ marty@MettBook:~/Library/Mobile Documents/iCloud~com~square-enix~final-fantasy-ix-ww$ cd Documents marty@MettBook:~/Library/Mobile Documents/iCloud~com~square-enix~final-fantasy-ix-ww/Documents$ ls marty@MettBook:~/Library/Mobile Documents/iCloud~com~square-enix~final-fantasy-ix-ww/Documents$
I inspected some other folders, too. It seems I can see no contents of any folder in
~/Library/Mobile Documents/. How can I access and change those files, so they are uploaded to the iCloud, again.
For some further background: The uploaded save game of FF9 is compatible with the desktop port of the game. I'd like to play it on desktop and mobile with the same save game.