At one point I downloaded the international app but couldn't find anything there that assured me it could be used in China. It looked like it might only be for Birmingham or some such. I didn't want to put money on it without some assurances. Also, I thought credit card charges could only be refunded within a few months, so I'm not sure how the security deposit gets back to you after a couple of years, say.

Too, the Chinese app has a very cheap one-year plan. Not sure I saw anything like that on the international app.