How to change your registered phone number on KuCoin?

Accessing Account Security Settings

1. Log in to your KuCoin account using your current credentials including email and password.

2. Navigate to the top-right corner of the dashboard and click on your profile icon.

3. Select “Security Center” from the dropdown menu to enter the dedicated security management interface.

4. Locate the “Phone Number” section under the “Verification Methods” tab.

5. Click the “Edit” button adjacent to the currently registered number.

Verifying Identity Before Modification

1. KuCoin requires strict identity validation before allowing phone number updates.

2. You must complete SMS verification using the existing registered number.

3. If two-factor authentication is enabled, you will be prompted to input the current TOTP code from your authenticator app.

4. In some cases, especially for high-tier accounts or recent login anomalies, email confirmation may also be triggered.

5. Failure to pass any of these checks halts the process immediately without exception.

Entering and Confirming the New Number

1. After successful identity verification, a new input field appears for the replacement phone number.

2. Enter the full international format including country code—omitting this causes immediate rejection.

3. Click “Send Verification Code” to initiate SMS delivery to the new device.

4. Input the six-digit numeric code received within 180 seconds; expired codes require resending.

5. Final submission triggers an automated confirmation message to both the old and new numbers as a fraud prevention measure.

Post-Update Restrictions and Validations

1. KuCoin enforces a 72-hour cooldown period during which certain sensitive operations remain locked.

2. Withdrawals, API key creation, and changes to withdrawal addresses are suspended until the cooldown concludes.

3. The system logs the timestamp, IP address, and user agent of the modification event for audit purposes.

4. Any attempt to revert to the previous number within 30 days requires escalated KYC re-verification.

5. Users who recently completed Level 3 KYC must submit updated government-issued ID documents reflecting the new contact details.

Frequently Asked Questions

Q: Can I change my phone number if I no longer have access to the old one?Yes—but only after submitting a verified support ticket with notarized identity proof and a signed declaration of loss. Manual review takes 5–7 business days.

Q: Does changing the phone number affect my existing API keys?No. API keys remain active and functional unless explicitly revoked. However, newly generated keys post-change inherit updated security policies tied to the new number.

Q: Why did my verification code fail even though I entered it correctly?This commonly occurs due to time drift between your device clock and KuCoin’s NTP servers. Synchronize your system time manually before retrying.

Q: Is there a limit on how many times I can update my phone number per month?KuCoin permits only two modifications per calendar month. A third request triggers mandatory video KYC and temporary account hold.