Can you buy an unlocked iPhone to be used in South Korea Carrier?

[arian19]

So I want to buy an iPhone 6 as a gift for a friend in South Korea for Christmas, I was wondering if I buy an unlocked phone from Apple in USA, will I be able to send it to them so they can use it with a carrier over in South Korea?

The SIM-free iPhone comes without a wireless contract commitment or carrier financing. It doesn’t come with a nano-SIM card for iPhone 6s, iPhone 6s Plus, iPhone 6, iPhone 6 Plus, or iPhone 5s. And because it’s unlocked, it isn’t tied to one carrier, so you can get a nano-SIM from any supported carrier worldwide, such as AT&T, T-Mobile, Verizon, or Sprint in the United States.

Purchasing a SIM-free iPhone means you will not qualify for the lower iPhone price associated with a contract or a carrier installment plan.

If you don’t want a multiyear service contract, or if you prefer to use a local carrier when traveling abroad, the SIM-free iPhone is the best choice.
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- Apple's Website
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But this says United States, what about outside the United States

 

[tobeornottobe]

Dont buy phones in South Korea...you can't turn off the camera shutter sound.!!! You've been warned.


Edit: Didn't read your post properly.

 

[arian19]

Dont buy phones in South Korea...you can't turn off the camera shutter sound.!!! You've been warned.

I said, I want to buy it in USA, and I want to know if it will work in South Korea...


Wait never mind, I didn't read what Apple said properly...

And because it’s unlocked, it isn’t tied to one carrier, so you can get a nano-SIM from any supported carrier worldwide, such as AT&T, T-Mobile, Verizon, or Sprint in the United States.​

This is the part I didn't read supported carrier worldwide

 

[Sumter]

Yeah I use my phone (6+ Verizon) in South Korea no problem. I was there this summer. Sim free should also be fine.

 

[greatness]

Used an unlocked phone (T-Mobile model) on both KT Olleh and SKT with zero issues.