5G test in Seoul Incheon Airport ICN (South Korea): real 72 Mbps on LG U+
Seoul Incheon Airport ICN: our June 21, 2026 field test using an eSIM connected to LG U+ on 5G measured 71.90 Mbps download, 33.80 Mbps upload. This proprietary result describes that place and moment; it does not represent all coverage in South Korea. The published screenshot, time and protocol allow the measurement to be checked and cited with its context.
Photo: Photo: Tuan Vy Spotter / Pexels
We measured the real mobile speed in Seoul Incheon Airport ICN, from Incheon Airport ICN, on 21/06/2026. With our eSIM connected to LG U+ on 5G, the test shows 71.90 Mbps download, 33.80 Mbps upload. That is very strong 5G, measured in real travel conditions.
To put that in context: at 72 Mbps an offline map downloads in seconds, a video call runs without a stutter and HD video starts instantly. Most travellers use only a fraction of this bandwidth.
In Seoul Incheon Airport ICN, the connection easily handles GPS, video calls, social media, tethering and streaming.
Our field note: Measurement taken on location, verified before publishing.
This reading comes from real on-site tests, not estimates or theoretical maps. To plan your trip to South Korea, compare plans and size your needs with our tools.
| Time | Download | Upload | Ping | Tech |
|---|---|---|---|---|
| 08:40 | 71.9 Mbps | 33.8 Mbps | - ms | 5G |
Each reading is taken on location with our eSIM in real travel conditions. We log the connected network, time and exact place, then publish the observed speed unedited.