Why Are APN Settings Required?

Most SKT Korea SIM cards and eSIMs work automatically. However, some iPhones may not receive the correct APN settings.
If mobile data, MMS, or Personal Hotspot is not working, manually entering the SKT APN settings can help restore the connection.

Simple Step

* Try to do as follows:
– Open Settings.
– Tap Mobile Data.
– Select your Korea SIM card data plan.
– Tap Mobile Data Network.
– Enter the APN settings shown below (refer to the image if available).

1. Cellular Data
APN: lte.sktelecom.com
2. LTE Setup (Optional)
APN: lte.sktelecom.com

3. MMS
APN: lte.sktelecom.com
MMSC: http://omms.nate.com:9082/oma_mms
MMS Proxy: smart.nate.com:9093
4. Personal Hotspot
APN: lte.sktelecom.com
All other fields can be left blank.

After Completing the Setup

Once you have entered the APN settings, your Korea SIM card is ready to use.
If you have not arrived in Korea yet, you may turn off the SIM data plan for now.
After landing in Korea, simply turn the data plan back on.
The SIM will activate automatically, and your phone will connect to the SKT mobile network.