The tru.ID SIMCheck API provides information on when a SIM card associated with a mobile phone number was last changed. This can be used when augmenting existing 2FA or anti-fraud workflows.
See SubscriberCheck for a solution that offers both phone number verification and SIM checking.
Before you begin
In order to perform a SIMCheck you'll need:
- A tru.ID account
- The tru.ID CLI
- A tru.ID project with
client_idandclient_secretcredentials
You're now ready to make your first SIMCheck API call.
Making a SIMCheck API call
The sequence diagram shows how SIMCheck works between your application server, the tru.ID API platform and the MNO (Mobile Network Operator).
sequenceDiagram
participant Your Backend Server
participant API as tru.ID
participant Mobile Network Operator
Your Backend Server->>API: POST /token
activate Your Backend Server
Your Backend Server->>API: POST /checks
note right of API: Create SIMCheck
API-->>API: Mobile Network Operator lookup
note right of API: Determine the<br />registered Mobile Network Operator
API->>Mobile Network Operator: Retrieve SIM info
Mobile Network Operator-->>API: SIM info
API-->>Your Backend Server: SIM info
note right of Your Backend Server: Apply logic<br />based on no_sim_change
Making the SIMCheck API request involves two steps.
