Can China Samsung mobile phone travel to South Korea?

Hello, the "tri-band mobile phone" mentioned by Mobile means that the mobile phone network standard supports GSM, WCDMA and TD-SCDMA, and some mobile phones will automatically switch to the WCDMA network standard (such as Samsung S4) when roaming abroad, so that the mobile phone can be used abroad. Your 9300 and 9000 support WCDMA network and can be used abroad. If you use the telecom and mobile versions of 9300 and 9000, it may not work. Maybe 9308 will switch automatically, but I can't guarantee it! The most important thing is to see what kind of mobile phone network is in your country. Most European and American countries support WCDMA network, while some countries do not support CDMA network. Whether your mobile phone can be used depends on the local frequency band of the network operation in that country you consult.

I hope it helps you.