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Wiltern
Joined: 23 Sep 2009
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 Posted: Mon Sep 02, 2013 6:07 am Post subject: Taking iPhone 4S to the US |
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| I'll be moving back to the US soon and since I have about 6 months left on my 2 year contract, I'll probably just buy it out. I asked a guy at KT Olleh if they can unlock it before I leave, and he said every iPhone since the iPhone 4S has no country lock. Does that sound right? Is there anything I need to do here to make it work in the US? |
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mr_thehorse
Joined: 27 Aug 2013
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| Posted: Wed Sep 04, 2013 8:56 am Post subject: Re: Taking iPhone 4S to the US |
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| Wiltern wrote: |
| I'll be moving back to the US soon and since I have about 6 months left on my 2 year contract, I'll probably just buy it out. I asked a guy at KT Olleh if they can unlock it before I leave, and he said every iPhone since the iPhone 4S has no country lock. Does that sound right? Is there anything I need to do here to make it work in the US? |
Nope. Nothing at all. Just put a TMobile sim card in, and you are good to go sir.  |
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Deja
Joined: 18 Mar 2011
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| Posted: Wed Sep 04, 2013 6:03 pm Post subject: |
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Country lock is different from a phone lock. Try to insert a non-KT SIM card to see if it's unlocked. The guy might just pull one over you, or not have a clue what you asked for really.
That said, T-Mobile has different frequences than those used in Korea, by KT/SKT (1700 I think). I doubt you'll be able to use it on T-Mobile...
(just a guess, the iPhone might have a full spectrum radio, like the Verizon CDMA version has WCDMA radio and works abroad) |
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mr_thehorse
Joined: 27 Aug 2013
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| Posted: Thu Sep 05, 2013 1:40 am Post subject: |
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| Deja wrote: |
Country lock is different from a phone lock. Try to insert a non-KT SIM card to see if it's unlocked. The guy might just pull one over you, or not have a clue what you asked for really.
That said, T-Mobile has different frequences than those used in Korea, by KT/SKT (1700 I think). I doubt you'll be able to use it on T-Mobile...
(just a guess, the iPhone might have a full spectrum radio, like the Verizon CDMA version has WCDMA radio and works abroad) |
It will work on T-Mobile for sure. I purchase the sim card whenever I go back to the states. No problems at all. |
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Jake_Kim
Joined: 27 Aug 2005
Location: Seoul
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| Posted: Thu Sep 05, 2013 2:20 am Post subject: |
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| FWIW, KT's primary roaming partner in the US is AT&T, which means technologically KT handsets are capable of tapping into AT&T infrastructure. |
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Deja
Joined: 18 Mar 2011
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| Posted: Thu Sep 05, 2013 7:05 am Post subject: |
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ATT yes, but T-mobile uses different frequences for 3G. Not everywhere in the states, but most places. The fact that it worked some place does not mean it will work in most US cities.
Google iPhone 1700 MHz |
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mr_thehorse
Joined: 27 Aug 2013
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| Posted: Thu Sep 05, 2013 9:11 am Post subject: |
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| Deja wrote: |
ATT yes, but T-mobile uses different frequences for 3G. Not everywhere in the states, but most places. The fact that it worked some place does not mean it will work in most US cities.
Google iPhone 1700 MHz |
You got me there . It works perfectly for me in LA, and SF. |
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Deja
Joined: 18 Mar 2011
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| Posted: Thu Sep 05, 2013 4:53 pm Post subject: |
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I wanted to use my EU GalaxyS3 in the US on T-Mo, because it is not as expensive as ATT, but was told it'll be a no-go most places  |
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