Where can I find the commands for other languages? I have my phone set to Japanese but I don't have a Japanese manual since I bought my phone in the U.S.
It took a while, but I tracked down the User's Guide in Japanese for the iPhone, Apple's official list of commands should be in there.
http://manuals.info.apple.com/ja_JP/iPhone_User_Guide_JP.pdf
In the French version, the list of commands is in Chapter 2, starting around page 44. I would think it would be in Chapter 2 in the Japanese version also, but since I don't speak Japanese I didn't check.
If anyone else is wondering about voice commands or other iPhone information for the language your iPhone is in...
* first, go to the version of Apple's website for your country/language (if you don't know it, go to
http://www.apple.com and choose it at the bottom of the page)
* then, click on the "Support" tab (or whatever it's called in your language), on the top of the page by the search bar
* finally, under iPhone, click on the link for the User's guide; it should be the first link, at least as I post this. If not, you should be able to track down that language's user guide from there (if not maybe you shouldn't be putting it in that language.

)
Hope this helps!