Yes there could be, check with your carrier now just in case, 
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Definitely. They operate on a different system than we do if I recall correctly.
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maybe i misread the article, but it seems like it's talking about getting a smartphone that will work in asia, not getting a smartphone in asia that will work in the us?
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Biggest issue would be making sure the phone is unlocked and not tied to a specific Korean carrier. Assuming it's an unlocked phone, it would depend on which LTE bands it supports. If that doesn't work you'd be stuck on HSPA+ or lower here. Do you have a specific phone in mind?
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Most networks in ROK is CDMA types. In US, only Verizon is CDMA compatible as far as I can remember. So, if you plan to use GSM network when you come back, CDMA inly phone may be a problem.
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the Xiomi phones seem to work pretty much anywhere once unlocked, just make sure you get a GSM phone and not a CDMA phone
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The camera shutter sound will always be on, no ability to silence it. The reason? Subway upskirt shots. I wish I was joking.
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Yea, it will speak Korean back at you
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Does America have sim cards? I heard everything was cdma over there?
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Charger issues at the very least...
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