好吧，我也不知道下单的时候要选什么下面是客服回复，可能是我的问题吧，昨天刚刚port-in成功，今天就要用漫游了 Dear customer, Thank you for your reply. We have opened the international roaming function for you.Please reboot your mobile phone and try to use later. Please note that the roaming voice and SMS charges are charged on pay per use basis, only the roaming data in the monthly plan can be used in Singapore, mainland China and Hong Kong SAR. As for the roaming rates, please go to our website to check: https://www.cmlink.com/sg/en/rates/ Thank you for supporting CMLink. Have a nice day! Best Regards Ann CMLink Customer Service