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NeoKOSIM NeoKOSIM NeoKOSIM
  • 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
    • China eSIM (VPN)
    • Japan eSIM
    • Thailand eSIM
    • Asia eSIM
    • Europe eSIM
  • Korea SIM
    • SKT SIM (Data + Voice)
    • 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
    • SKT Pickup Points
    • LGU+ Pickup Points
    • Recharge – Basic Plan
    • Customer Support
    • eSIM & SIM Tips
  • My Page
    • My Account
    • My Orders
    • My Cart
    • My Favorites

Faqs

Home / Faqs
0
By sunaerang
In International eSIM, Korea eSIM
Posted April 17, 2026

Android Roaming eSIM Setup

Step 1: Install eSIM (for China, Korea, Asia, Europe) 1. Go to Settings > Connections > SIM card Manager. 2. Select Add Mobile plan. 3. Scan the QR code (from another device or printout), [...]

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0
By sunaerang
In International eSIM, Korea eSIM
Posted April 16, 2026

iPhone Roaming eSIM setup Guide

Step 1: Install eSIM (for China, Korea, Asia, Europe) 1. Go to Settings > Cellular > Add eSIM > Use QR Code 2. Scan the QR code (from another device or printout), or use the Camera app [...]

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0
By sunaerang
In International eSIM, Korea eSIM
Posted April 15, 2026

Android Local eSIM Setup

Step 1: Install eSIM (for Korea, Vietnam, Japan, Thailand) How to Setup 1. Go to Settings > Connections > SIM card Manager. 2. Select Add Mobile plan. 3. Scan the QR code (from another [...]

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0
By sunaerang
In esim
Posted April 14, 2026

iPhone Local eSIM setup Guide

Step 1: Install eSIM (for Korea, Vietnam, Japan, Thailand) 1. Go to Settings > Cellular > Add eSIM > Use QR Code 2. Scan the QR code (from another device or printout), or use the Camera [...]

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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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2
By sunaerang
In Refund
Posted April 10, 2026

Korea eSIM Refund Policy

Notifications This refund policy applies to all local and roaming data-only eSIM products. Non-Refundable Cases Please note that refunds are not possible in the following situations: – If [...]

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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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5
By sunaerang
In Korea eSIM, Korea SIM Card
Posted April 2, 2026

1-minute review

Summary * To leave a review for a product, 1. Click the product image (in review email) 2. Click the top-right menu 3. Select  “My Account” 4. Click “Leave a reviews” 5. Rate the item [...]

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2
By sunaerang
In esim, K-SIM
Posted March 2, 2026

What Is Mobile phone Identity Verification in Korea?

The Mobile Identity Verification Service is a communication service separate from data, call, and text usage. It is an additional free service provided by a Korean public certification authority [...]

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