SIM Verification

When to use it

SIM Verification confirms a customer's ownership of a phone number, and surfaces telco-held information about that SIM for verification purposes — useful when a phone number itself is part of your identity or risk check (e.g. confirming a loan applicant controls the number they registered with, or that their SIM/subscriber profile matches other identity data you hold).

Flow

1. Send an OTP to the customer's phone number. The response also identifies the telecom carrier that owns the number.
2. Verify the OTP the customer entered, confirming they control that phone number.
3. Verify subscriber information — a separate check that compares identity details you hold (ID number, name, date of birth) and account-activity signals against what the telecom carrier has on file, returning a match / no-match / no-data verdict for each item checked. See Verify Information for the full list of checkable fields.

Sending and verifying the OTP is the ownership-confirmation step, and it's a prerequisite: a customer must complete it for a phone number before you can verify subscriber information against that number. If that verification session has since expired, the customer needs to send and verify a new OTP before you try again.