Yes indeed I am.

And I bought an iPhone. For anyone who speaks Japanese (or for that matter, Chinese or any other language which requires more than the average a-z), I can inform you that which I had wished somebody out there had informed me in a straightforward manner when I started digging into this over a year ago.

Yes, you can use Japanese and Swedish (or whatever combination) on the iPhone simultaneously. I can get my åäö’s which my Japanese cell couldn’t spit out for the life of it (me), and I can get 日本語 to slither out of it as well. You can send SMS’es within Sweden in Japanese, and in general, you can use them as you would in Japan, except that they also properly support Swedish.

In case you are confuzzled about how to do this, the Swedish (with presumed English translation in parentheses) menu alternatives for getting Japanese enabled is as follows:

Inställningar (Settings) > Allmänt (General) > Internationellt (International) > Tangentbord (Keyboard) > Japanska (Japanese) > QWERTY or Kana (whichever you prefer).