Change Android system language to Japanese WITHOUT rooting!

Usually it's quite easy to change the system language of your Android device to another one. But how can you proceed if the language you want isn't even listed?

In my case it was a Samsung Galaxy S3 mini with Android 4.1.2 and I wanted to change the OS language to Japanese, but unfortunately there was no option. There was Korean or Chinese, but no Japanese...

I read something about the app 'Language Enabler' (available in Google PlayStore), which is able to enable hidden languages within Samsung devices.

But as I read this app would only work with rooted Android phones - which I didn't have. Nevertheless I downloaded the app and started it.

After starting this app a warning message about this showed up. But: As you can see in the screenshot on the right, 'you can still apply a default language'.

And then I tried exactly just that. The list within Language Enabler luckily included also Japanese. For applying the default language there was a phone system restart necessary, but that didn't happen. So I confirmed the change to Japanese again.

It took like 20 seconds and the language was changed to Japanese without even restarting the phone! But to be sure I restarted my phone and after a reboot the system remained in Japanese.

And that's how it looks in Japanese

So it worked as it wasn't planned. I don't know if the same scenario would work with other devices, but you can may comment your experiences about that.

The next goal would be to understand the OS language. Good luck with that!