Thank you for your information, Shel.
Yes, you are right!! It is really hard to find WiFi in France
Finally, I can use 3G to browse an internet on my kindle just now!! really exciting!!
I change location in manage Kindle to US. Then, I restart Kindle and Brovo! It's work!!
The things I concern is I shouldn't buy the book via 3G on my Kindle. As my location will be detect by Amazon US, Right?
I would better create another account to buy credit for this account using US address to avoid subsequent problem.
-Alix