I lived in the United States for a long time and visited Korea for 1mon. I visit some other shops But they do not offer short-term packages. But chingumobile offers not only many short-term options, but the prices are also reasonable. There was a problem that my American phone was locked. The staff patiently told me how to solve it and provided me with several solutions. Finally we solved the problem perfectly. I really appreciate it, and I recommend here to everyone~