Electronic devices and batteries

Purchases from duty-free shops in Korea (liquids exceeding 100ml) can be taken as carry-on only if the packaging remains sealed and you have the receipt. Crucially, if transferring in a country like China (e.g., Beijing, Shanghai), transit security will confiscate these items if you leave the transit zone or if they require re-check-in of luggage. It is generally impossible to add items to checked luggage once in the sterile zone of the airport.

When traveling to South Korea with electronics:A Dyson hairdryer in checked luggage is generally not an issue.If transiting through China, electronic devices with batteries (including older phones like an iPhone 7) must be placed in carry-on luggage due to regulations against batteries in checked baggage. Ensure devices are charged, as they may be requested to be turned on by security.

All lithium batteries, power banks, and electronic devices with built-in batteries must be carried in carry-on luggage. Checked luggage containing these items is often flagged during transit security, leading to confiscation or significant flight delays.

Regarding the number of mobile phones one can bring into South Korea, there isn't a strict limit explicitly stated for personal use. However, bringing an excessive number of devices, especially if intended for resale, could raise questions at customs. Typically, travelers bring their personal phone(s) and perhaps a couple of additional devices for gifts or other purposes without issue. If traveling with multiple phones (e.g., two personal and two for gifts), it's generally permissible as long as they are for personal use or intended as gifts and not for commercial resale.

Power banks are permitted in carry-on luggage on flights to South Korea via Beijing. Ensure power banks have the CCC marking, as checks can be strict. Power banks must be transported in carry-on luggage.

It is acceptable to bring an older or second phone to South Korea. Customs generally do not question the presence of older devices. However, if transiting through China, all devices with batteries must be in carry-on luggage. Ensure the phone is charged, as it may be requested to be turned on.

Travelers frequently ask if carrying multiple smartphones through South Korean immigration is suspicious. There are no restrictions on bringing multiple personal mobile devices. It is common practice for tourists to carry separate phones for photography, local navigation, or as backups.

Specific regulations exist for importing electronics into South Korea. For instance, e-cigarettes with nicotine concentrations exceeding 10mg may be subject to restrictions. It's advisable to check the latest customs regulations or contact the relevant authorities for detailed information on importing electronic devices to avoid issues.