Prepaid SIMs from LG Uplus save you hunting in Seoul
International flyers at GMP use the LG Uplus counter to get a local Korean number before heading into the city, instead of figuring it out at a CU or GS25 later. You’ll usually see it near other telecom desks in the International terminal arrivals area, right after customs. Staff handle airport-style volume all day, so transactions move faster than at neighborhood phone shops.
LG Uplus typically sells short-term tourist SIM and eSIM plans by day count: think 3, 5, 10, or 30 days with data-only or data plus voice. Prices sit in the same band as KT and SKT at Incheon, usually around ₩5,000–₩10,000 per day depending on plan length. Have your passport ready; Korean regulations require ID for activation, and they won’t start until they see it.
Most plans at the LG Uplus airport counter include unlimited data with a speed cap after you blow through a high-speed bucket, often around 3–5 GB per day. If you plan to tether a laptop for video calls longer than 30 minutes, ask specifically about hotspot allowances when you buy. For calls, ask if the plan includes minutes to Korean mobiles; some cheaper tiers are data-only and block voice.
Staff at LG Uplus usually handle setup for you on the spot, including APN settings on iPhone or Android, so the SIM is live before you leave the desk. Give yourself a 10–15 minute buffer before your bus or AREX train time in case activation queues stack up behind a delayed flight.