順便 cap 啲野俾大家睇,根據《流動電話號碼可攜工作程序(Procedures for Mobile Number Portability Provision) 》Section 11 (Porting of Mobile Numbers Assigned to Pre-Paid Sim Card Users):-
11.5 The RNO should verify the mobile number of the pre-paid SIM service by using Calling Number Display Service or any other suitable means. The DNO should facilitate the porting request by checking whether the service is terminated or not. For clarification, the mobile number of the pre-paid SIM service is considered terminated by the DNO if the prepaid SIM service expires on the date of porting, or no stored values remained, or the porting mobile number is ceased to be assigned to the customer. The DNO will reject a porting request if the pre-paid SIM service is terminated.