I bought a Koodo phone and I paid a fee to unlock it, and it's not working with a South Korean carrier?

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I bought a Koodo phone and I paid a fee to unlock it, and it's not working with a South Korean carrier? 
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Danny

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Posted 6 months ago

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Goran, Mobile Master

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I assume a newer model iPhone? It needs to support 2100mhz for voice in SK. Then LTE needs 2600mhz, or 2100 or 800 or 900900mhz. But not sure if they have VoLTE.
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Danny

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It's actually a iPhone 6s. I don't know if you would consider that to be a "newer" model? Regardless, I paid a fee to unlock it, so it is "unlocked", to my knowledge, but i didn't pay off my Koodo tab. I am waiting for the billing cycle so I can pay the accurate amount. But, I have canceled my plan with Koodo and currently not using them as a carrier, for my phone. Any knowledge with this information?
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Danny

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It's actually a iPhone 6s. I don't know if you would consider that to be a "newer" model? Regardless, I paid a fee to unlock it, so it is "unlocked", to my knowledge, but i didn't pay off my Koodo tab. I am waiting for the billing cycle so I can pay the accurate amount. But, I have canceled my plan with Koodo and currently not using them as a carrier, for my phone. Any knowledge with this information?
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Goran, Mobile Master

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New enough. You don't need to pay off your tab for it to work unlocked.

So looks like the 6S doesn't have 2100mhz. It does have 1700/2100 as AWS but I'm gonna guess it cannot use them independently. You can check manual network selection and try to a connect to any network you see. Chances are that's the issue.
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Goran, Mobile Master

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You cannot unlock it in self-serve. You will have to contact Koodo by sending a private message to Koodo via Facebook Messenger or DM via Twitter or call 611 to get it unlocked.
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Monika Štrajtová

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Thank you!
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Danny

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I went to the carrier option and I was able to log into the KT network (well, it showed a checkmark)--I don't know what that means.

I haven't updated my iOS for a while now, if I update it would it change it?
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Ivan, Mobile Master

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To clarify the whole AWS (1700/2100) vs 2100 thing - Phones that do not specifically mention the 2100 band but support AWS are NOT compatible with 2100. Now I don't think that phone compatibility is the case here, just adding in case someone in the future reads this thread.
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Ivan, Mobile Master

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To clarify the whole AWS (1700/2100) vs 2100 thing - Phones that do not specifically mention the 2100 band but support AWS are NOT compatible with 2100. Now I don't think that phone compatibility is the case here, just adding in case someone in the future reads this thread.
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Dinh, Mobile Master

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hi Danny,
Can you go into Settings --> General --> About --> Model --> click on the model, it will tell you the both the model and version of the iPhone.

How and when did you unlock the phone? have you tried to make sure it is unlocked. When you said it didn't work on a SK network, what messages did you see?

Koodo/Telus have unlocked iphone for free since Nov2017. you said you paid a fee to do it, were they legit?
(Edited)
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Dinh, Mobile Master

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Yes, by CRTC law, carriers provide unlocking for all phone from Dec2017, but Koodo/Telus unlock phone since Nov 2017 for FREE. You could contact Koodo/Telus (chat, facebook) to request unlocking of telus/koodo phones.

I checked on Apple website, here is the spec of your iphone 6s. Look like it got almost everything. Have you checked your carrier? and which bands they required?

Model A1688*

LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29)
TD-LTE (Bands 38, 39, 40, 41)
TD-SCDMA 1900 (F), 2000 (A)
CDMA EV-DO Rev. A (800, 1700/2100, 1900, 2100 MHz)
UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
(Edited)
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Dinh, Mobile Master

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From this website https://www.frequencycheck.com/carriers/kt-south-korea
It said it needs UMTS B1(2100) and LTE B1,3, 8

It think the A1688 is compatible with KT network. It could be issues with unlocking or software carriers updates.
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Danny

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Something is confusing me. I go into settings and it says I am not on a network (which I'm not) and in the tab "Carrier" it says Koodo 31.0. If my phone were unlocked, should it say "Unlocked", or does that not matter?
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Dinh, Mobile Master

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How did you do the unlocking? have you tried to reset the phone through iTunes? Normally you would see a message in your iphone or itune that your iphone is unlocked.

If you saw Carrier "koodo 31.0" in your phone with your KT SIM, the phone was likely locked to Koodo or its network settings haven't been updated properly.

I would try to contact Koodo/Telus and ask for unlocking again. You need to provide them with your IMEI number also.
(Edited)
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Ivan, Mobile Master

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The phone should pop up a message that it's locked once you put in your SK SIM card. If no message appears, then the phone isn't locked.
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Robert, Mobile Master

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This might interest you : https://thearrivalstore.com/will-my-phone-work-in-korea/

Looking at this site, your phone should work. Have you tried to reset it?