Starting from 1 Mar 2022, all HK SIM users must finish real-name registration before using data in Hong Kong, otherwise, the plan can’t be activated. Customer can complete the real-name registration through local network provider website
http://simreg.icard.com.sg:9982/?LT=en

 

Click here check the registration status:

https://www.icard.com.sg/pages/check-your-package-details

You can do it anywhere, package only will start when you in HK.

Sample: