Hi, Walter,

Thanks for your suggestion and help.
I have ever thought the method you mentioned.
But, as I got information from Rudy, part of language keyboards are not yet completed/enabled.
Even if we enable it, we still cannot use it(ex: Romanian keyboard and Japanese keyboard, etc...).
So, I only list the available one. I will list other language codes after developers enable it.
Thanks! Have a nice day! ^^