Your Questions About Ios4

Thomas asks…Can the iPhone 3GS system/functions be upgraded to iOS4 without buying an entirely new unit?I thinking of getting a new phone (rather urgently) and was planning on getting an iPhone 3GS...that is, until iOS4 was just released. I'm not sure when the iOS4 will be on sale in my local market (not the US) yet, so I'm wondering if I get the iPhone 3GS, can I upgrade the system/functions to the iOS4's without buying an entirely new unit once the latter is finally out here. Need advice!!

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