Every Apple Store in Japan has sold the GSM iPhone 4 since last year. I have two questions: 1) Since Japan only has CDMA networks and no GSM networks, how does the GSM iPhone 4 work in Japan? 2) I hear that Softbank (which is the exclusive carrier for the iPhone 4 in Japan) provides iPhone 4 customers with a SIM card. Correct me if I'm wrong, but are SIM cards for GSM networks only? Is Softbank's SIM card for the iPhone 4 a non-GSM SIM card?