Does someone knows a mobile visual dictionnary ?

I'm not aware of such dictionary but when I was in China, I used "Point it" -  a booklet that has pictures of mostly all kind of neccesary things when you travel.  It is small and cheap, just around USD2. Maybe you can use it while searching for a real dictionary?

http://www.graf-editions.de/fr/pointit

Hi,

Yes. Many people have sense 7 and 12 having the same ability. They understand many things in images. I don't know if you have 7th or 12th sense. I have met some people sharing the same thing in an American site. Happy that I am not the only one.

You cant find any dictionary to help you if you are in the case I mentioned above. Cos if you are one of us, your brain can define faster as an language.
Regards