Talk:Korea (South)/@comment-2001:630:E4:4220:FD60:F3A4:B967:9538-20180507123317/@comment-59.1.164.2-20180509162854

It really depends, if you just need more data per GB it is fine to use the CMHK sim card, but as with most of the roaming SIM cards your data will travel all the way back to Hong Kong so the actual speed will be limited.