I've been reading this thread enthusiastically because I'm thinking about buying a N900 myself and I live in Japan. I currently use a Nokia E71 with Softbank. It works well except I can't write sms or mms in Japanese, but I do receive them. Sometimes they don't open in the mail app, so I have to browse through the attachments one by one, and save the text one to the sd card, then use a 3rd party app to read it. Its slow and a pain, and sometimes I can't even save the attachment at all! The only thing I like about the E71 is battery life and its VoIP integration (this is a must for me since I use an Asterisk PBX all the time). So the main reason for me to buy a N900 is because I'm a big linux fan and this cellphone is completely open, and uses things like v4l, pulseaudio, etc. I might even write some software for it. I would like to know of any compatibility issues using the N900 in Japan, especially using mms: showing emoticons and animations that people use with their japanese cellphones. Is there any other thing that I should be aware before buying the N900 for use in Japan?