Hi Everyone, I'm off to Japan next week and am trying to determine how to configure my iphone so that I don't get hammered by data. I'm not planning to make or accept calls so I'm wondering if leaving it in Airplane mode while turning on WIFI makes the most sense. Am I correct to assume that this configuration avoids any downloading of data via a cellular network? Btw, I was stunned to learn on ATT's site that the iPhone will work in Japan. First phone I've ever owned that's compatible in Japan. Many thanks in advance for your help!