Yes. Read more here. Viewfly said “Only the 3G or 3G S will work, not the 1st generation iPhone (metal back one). You MUST be certain to turn 3G ON in the settings. You can keep data roaming off. In Japan they use 3G for voice. There is no GSM. Mine worked fine. And when you wish to use data, just turn data roaming on. When you do that, the ‘3G’ symbol will appear then.”
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