This might not be relevant to the thread, but well... Since this thread got the most attention on the Android version of FFT WoTL, I'm just going to post it here.
I just bought the game like a week ago. When I tried to run it, it said "Mount Data File Failed" just right after the app opened. I don't know what's wrong with it, is it the game which has been updated to detect rooted phone/cheat app (since I installed Lucky Patcher & Game Guardian on my phone) so it shouldn't run. Or simply the game is not compatible with Nougat version of Android (anyone can confirm this?). I had tried lots of things to make the game run, like uninstalling my Game Guardian & Lucky Patcher. I was like gonna refund the game. I reinstalled all my 'cheat' tools. Right before refunding the game, I tried to open the game once more times just to make sure. And guess what? The game ran just fine! It's so freaking weird.
After several times of trials and errors, I noticed the game COULD ONLY RUN on my phone after I installed Lucky Patcher. Just install the Lucky Patcher, no need for patching / any kind of stuff. And only Lucky Patcher, trying to install other apps doesn't work either. That's so freaking weird once again. If my phone got restarted, the game could not run again (Mount Data File Failed error). So I need to repeat Lucky Patcher installation process (uninstall - install) again. It's annoying.
I've tried a pirated version of FFT before, on unrooted Android and it ran just fine (Lollipop version of stock Samsung ROM). Now I got my phone rooted (Nougat version of LineageOS).
P.S.: For people who couldn't find the save file, you need to go to 'data' directory twice.
`/data/data/com.square_enix.android_googleplay.FFT_en2/files/FFTSAVE.BIN`
instead of
`/data/com.square_enix.android_googleplay.FFT_en2/...`
(I think I've heard somewhere in StackOverflow that the application data directory is migrated since Marshmellow, so you might not be able to find it there if you're running older version of Android)
the LIOS save editor works with flying colors on my phone. Also, please notice the file permission. In my case, if the file permission is RW_,___,___, the game doesn't detect the save file. But if I change the permission into RW_,RW_,RW_, it works just fine. No error, no bug, no glitch, just no problem at all. And my game is updated to the latest version. "I just bought it about a week ago".