Backup game data when cloud save unavailable.

I assume that the game doesn't provide an option to export/back up your game data.

You could see whether the Helium backup app can manage this. Most backup apps can't actually back up app data unless the device is rooted, but Helium (which uses the ADB backup mechanism) worked well for me a few years ago for transferring data when Google's own phone setup app failed totally on my new (at the time) Pixel. However you should know that it doesn't work for all apps (I believe that there is something the developer has to allow, which most do), so I can't guarantee success.

It's not certain that your saved games are stored in the .obb file. It's quite possible that that is game data (graphics, levels, whatever) and that your play record is in the app's "private" data. But that's what the above app (and the ADB backup) will attempt to back up, so it's worth a shot.

This is one area where Android has always lagged a bit, I'm afraid.

 

I would email the developers of the game. See what they can suggest.

 

OK, I've never done phone exchanges myself, and have still had the previous device around, and so had plenty of time to transfer my stuff to my new phone.

 

Yeah, unfortunately I didn't think that a removable SD card would help (couldn't really see why it would - I suspect it was just that the person who wrote that used one). I last used Helium in 2017 (and neither device had a removable card), and it sounds like it may not have been maintained/updated sufficiently in the interim (checks: there have been 2 android releases since last update, which isn't a recipe for success with something like this).

(I've not looked at the images because it asks for a OneDrive login, and I'm not a Microsoft user. But I have a suspicion it wouldn't be something we could do much about).

 

FYI that site requires a Microsoft login. Which I don't have.

If you got images you want to show, the best way is to attach them to your post.

 

Sadly, not. If you were rooted, yes, but I don't know whether you can root that device, even less whether you can root without resetting it in the process (which would defeat the purpose of doing it), and if you are exchanging the device it would not be fair to root it in the meanwhile (certainly not without the informed consent of the other party).

 

It's also not something to do without making sure you understand the process - which is always to some extent specific to the model of phone.
And because it usually affects warranty status (and on some phones, particularly Samsung, there may be no way of undoing it that removes evidence that it had been done, which may itself be enough to refuse warranty support), and also because some apps won't work on rooted phones (many media apps, almost all banking or mobile payment apps), it's really not fair to do it to a phone that you are about to pass on (in some cases there are workarounds for this, but that's more stuff to learn in very little time).

Basically I would not recommend this at this point unless you already know what you are doing and how to undo it (which for root itself means "reflash the phone with a new set of official firmware") and unless the recipient is happy with you doing that (because you probably can't do anything about the warranty status - even reflashing to stock won't fix that). And, as noted, for many devices the process of rooting will involve a factory reset of the phone, which will destroy the data you are trying to save (and no, you won't be able to recover them, for several reasons), and for some devices, especially many US Samsung models, there just isn't a way of doing it. So overall I don't think that root is a reasonable solution at this point, I only mentioned it because it would be the only remaining way I know.