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  • Korea eSIM
    • SKT eSIM (Data + Voice)
    • KT eSIM (Data + Voice)
    • 5G Unlimited Data Only
    • LGU + 5G eSIM: Data + Voice
  • International eSIM
    • Vietnam eSIM (Data + Voice)
    • Vietnam eSIM : Data Only
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    • Thailand eSIM
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    • KT SIM (Data + Voice)
    • LGU + SIM (Data+Voice) 5G
    • Korea SIM(585) : All unlimited
    • Korea SIM (100) : All unlimited
    • Korea SIM: 15GB+100min/SMS
  • Korea Pocket WiFi
    • DAY Plan
    • 30-DAY Plan
  • Support
    • KT Pickup Points
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troubleshooting

Home / Korea eSIM /
7
By sunaerang
In Korea eSIM, troubleshooting
Posted April 12, 2026

Why Korea eSIM Both Lines Not Working on iPhone

Summary A customer living in the United States purchased a Korea eSIM on April 3. The eSIM was successfully installed on their iPhone. They wanted to use both their Korean number and U.S. number [...]

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7
By sunaerang
In Korea eSIM, troubleshooting
Posted April 10, 2026

iMessage Not Working After Korea eSIM? Here’s the Fix

Summary I purchased and am currently using the SKT Korea eSIM (15-day plan). While keeping my U.S. number (primary line), I added and installed a Korean eSIM. However, I experienced an issue [...]

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6
By sunaerang
In troubleshooting
Posted April 9, 2026

Korea eSIM Installed but Not Working? Fix It in 1 Minute!!

Summary A customer residing in Australia purchased two SKT Korea eSIMs on March 24 and completed the installation in advance while in Australia. After arriving at Incheon Airport at around 6 PM [...]

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