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The most useful mail I get is a correction. Korea changed its SIM rules twice in nine months and its apps are dropping the Korean-number requirement one by one; readers usually notice before I do.
Email: [email protected]
What is genuinely useful to send. A price that has moved since the date printed on the page. An airport counter that changed its hours or its location, especially the Incheon T2 SKT desk, which two 2026 sources place in different spots. An app that started or stopped demanding a Korean 010 number: Coupang, Kakao Pay and the Tabling kiosks are the ones I am watching. A coverage experience from somewhere my information rests on published maps and traveler reports rather than measurement: the Seoraksan or Jirisan trails, Ulleungdo and the ferry out to it, the KTX between Seoul and Busan, the DMZ tour stops. Tell me the brand, the day, and what the phone showed.
What I cannot help with. I am not a carrier and I do not sell eSIMs. If a plan you bought is not working, the provider's support is the only route to a refund and it is faster than I am. For a Korean carrier eSIM, that means LG U+, KT or krsim directly. The setup page covers the fixes that need no support at all.
Partnerships and guest posts. None. No guest posts, no sponsored placements, no paid reviews, no bought positions in any table. The disclosure page prints the commission rate I earn from each brand, including the three travel-eSIM brands and three Korean carriers I earn nothing from.
Response time. A few days. Verified corrections ship in the next update with a note of what changed.
Sources & freshness: Related: how we test · about. Last revised September 7, 2026.