Ever wanted to know, how to make an i-mode site?
Here is the answer for Japan:

What's i-mode
There is a page "Let's Make i-mode Web Sites".

For all other countries, please contact the i-mode operator in each country you are interested in.

See also: The unofficial independent i-mode FAQ


Somewhat related:
3 UK under pressure from DoCoMo
News reports claim that DoCoMo is ending its ties with 3 UK in a move that would leave it free to partner with another UK cellco. 3's failure so far to adopt i-mode in the UK has been a bone of contention with DoCoMo for some time, with the operator warning in September that if 3 UK did not commit to i-mode it would "look for another opportunity in the UK."