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Our Phone Verification process includes a series of automated checks to ensure the validity and security of the phone numbers being verified. This page outlines the potential warnings and errors you might encounter during the phone verification process.

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Automatic Decline Conditions

The following conditions can result in an automatic decline depending on your application settings:
  • VERIFICATION_CODE_ATTEMPTS_EXCEEDED - The user has exceeded the maximum attempts to enter the correct code
  • HIGH_RISK_PHONE_NUMBER - The phone number is identified as a high risk number
  • PHONE_NUMBER_IN_BLOCKLIST - The phone number is in the blocklist

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Configurable Verification Settings

Applications can configure how the system handles various verification issues by setting actions for different risk categories:
  1. Number Type
    • Risks: VOIP_NUMBER_DETECTED
    • Configurable action: Decline, Review, or Approve
  2. Risk Level
    • Risks: DISPOSABLE_NUMBER_DETECTED
    • Configurable action: Decline, Review, or Approve
  3. Duplicated Number
    • Risks: DUPLICATED_PHONE_NUMBER
    • Configurable action: Decline, Review, or Approve

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Verification Attempt Limits

The system imposes limits on verification attempts to prevent abuse and maintain security:
  • Code Entry Attempts: Maximum 2 attempts to enter the correct verification code
  • Code Resend Requests: Maximum 2 requests to resend a verification code within 24 hours
You can customize these attempt limits in your application settings to match your specific security requirements and user experience needs.

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Phone Verification Warnings

Tag
Description
VERIFICATION_CODE_ATTEMPTS_EXCEEDED
The user has exceeded the maximum number of attempts to enter the correct verification code.
HIGH_RISK_PHONE_NUMBER
The phone number is identified as a high risk number.
PHONE_NUMBER_IN_BLOCKLIST
The phone number is in the blocklist.
DISPOSABLE_NUMBER_DETECTED
The phone number has been identified as temporary or disposable, often used to avoid verification traceability.
VOIP_NUMBER_DETECTED
The phone number appears to be a Voice over IP (VoIP) number rather than a standard mobile or landline number.
DUPLICATED_PHONE_NUMBER
The phone number has been identified as a duplicate of a previously verified number.

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Warning Types

Each risk is assigned a warning type based on your application’s configuration settings. Warnings fall into three severity categories: