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!