Can a vodafone iPhone 3G plan be used in any other phone in N.Z?

[email protected] said:

Is it possible for me to upgrade to an iPhone 3G 1GB plan and then use that in my 1st generation iPhone in N.Z

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Yes, you can.Provided the iPhone is not locked with any different network. If it is, then you need to unlock. I suggest you can approach Mobileunlocksolutions.com and specify the country,locked network of iPhone.Based on the availability you can get the permanent unlock service along with free instructions.