So, you want to type in Kanji and Kana on your iPhone...
Hello folks. I’m terribly sorry that I have lagged so much in updating this page since 1.1.3 (and subsequently, 1.1.4) came out. Over the Christmas holiday, a family member got run over by a van, and our lives has been in triage ever since. I have had plenty of time to update this page, but my priorities have shifted, and I really put it at the back of my mind.
Fortunately, one of the people who have emailed me for help in the intervening time was dogged in his pursuit of answers, and on his own figured out what he needed to do. I am publishing the steps that Jesus di Sica generously sent to me. For the moment, I am leaving my email address on the page, but I ask that you be patient with regard to my response time if you have question, as I have too much to contend with right now to do any of you justice. Thanks so much Jesus, for your help and patience.
1. install BSD Subsystem
2. install Term-vt100
3. install Erica's utilities
4. install mobilefinder
5. install mobiletext edit
6. install 'SUID Lib Fix' (under Tweaks 1.1.3)
7. open Term-vt100
at the first login prompt type: alpine
at the command prompt type: bash
then type as follows:
echo PATH=$PATH;/var/root/bin
cd /var/mobile/Library/Preferences
plutil -c xml1 .GlobalPreferences.plist
(in the future, anytime you need to fix or add more languages, if it appears as garbled text in MobileTextEdit, you can go back and run step 7 again to convert your GlobalPreferences.plist file to xml, so that it can be read in MobileTextEdit and won't appear as gibberish)
8. open MobileFinder, navigate to /var/mobile/Library/Preferences
9. highlight GlobalPreferences.plist
10. click on File->Modify->Open with->TextEdit.app
11. this will open a new screen with the code for the global preferences. scroll down to find both places where you see the following
<array>
<string>en US</string>
</array>
...and edit both places to add a line so it looks like this:
<array>
<string>en US</string>
<string>ja</string>
</array>
When you visit any application that uses a keyboard now, there will be a globe next to the ‘123’ characters key. Selecting this will alternate between your US and Japanese keyboards. The Japanese keyboard is pretty easy to distinguish, because it is compressed to make room for a kanji/kana suggestion field, and has a long hyphen to the right of the ‘L’ key.

Needless to say, if you find these instructions helpful and I have earned any of your gratitude, I’d appreciate if you would look at the adverts on this page and click on any that interest you. If you need any assistance with the instructions, or have feedback, please email me at the address below. English only please, as my skill with Japanese is very poor.
– 頑張ってください!