On Korean public transport, silence is the default — not the exception. Loud calls, music, or strong-smelling food will draw serious glares from those around you.
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- Loud conversations, phone calls, and music are all considered inconsiderate. Keep calls very brief and near-silent — or step off at the next stop to talk.
- When in doubt, text instead of call. It's always the safer choice on Korean transit.
- Eating full meals on the subway is frowned upon. Small, odourless snacks are usually tolerated.
- The same applies outdoors — Bluetooth speakers in parks or on streets are just as unwelcome near residential buildings.