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Clarify valid SIM Swap scenarios #73

@mhfoo

Description

@mhfoo

Hi

I have some clarifications on the scenarios below. I believe Scenario 1 and 3 are valid SIM Swap scenarios.

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Scenario Context and prerequisites

  • Mobile phone number must be active and allocated to a mobile service at the time of invoking the CAMARA API. The mobile service can be in any of the following states: active, temporary suspension of service.
  • The same mobile phone number cannot be associated (and active) with more than one IMSI (SIM card), ie: Multi-SIM product.
  • API input reference point: mobile phone number; not IMSI

Scenario 1:
Mobile phone number port-in from donor operator to recipient operator.

  1. Recipient operator performs new mobile service activation with new IMSI (SIM card) issued with temporary mobile number; performs a change number transaction to the port-in phone number at a later scheduled date.
  2. Invoking (using port-in phone number as input) CAMARA API on the recipient operator side; as routed by Telco Finder, based on which operator the phone number is active on.
  3. The mobile service on the donor operator will be terminated upon port-out.
  4. The temporary mobile phone number on the recipient operator will be replaced by the port-in phone number upon successful schedule port-in.

Scenario 2:
Change number scenario.

  1. IMSI (SIM card) is not changed, the original mobile phone number is recycled back into the frozen pool for X duration.
  2. Original mobile phone number is no longer active at the mobile service level, mobile phone number will not be allocated right away.
  3. IMSI (SIM card) will be associated with another mobile phone number.

Scenario 3 List:
Change SIM card scenario list, mobile phone number is not changed.

  • Within the same Mobile Network Operator (MNO): A new IMSI (SIM card) is issued for this same mobile phone number. Example: 4G SIM card is swapped with a 5G SIM card.
  • Between MNO and the Mobile Virtual Network Operator (MVNO) using the same MNO: A new IMSI (SIM card) is issued for this same mobile phone number.
  • Between different MVNOs using the same MNO: A new IMSI (SIM card) is issued for this same mobile phone number.
  • Lost SIM card scenarios.
  • Replace SIM card scenarios. Ie faulty SIM card
  • Mobile phone number released back to customer within the freeze period, new IMSI is issued.
  • Change ownership (between different entities), cease and provide mobile service, new IMSI is issued.

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