The answer is yes. The order is not a problem at all. You can register with email first and add a phone number later.
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Since you already have an account, the most important suggestion is to bind your phone number as soon as possible. This is necessary for account security. Here are the specific steps and verification methods:
Goal: Bind a phone number to your existing account as a login and security verification method.
Steps: Log in to the OKX app or web version. Go to "Profile" or "Security settings", and find "Phone number" or "Security verification". Click "Bind" or "Add", enter your phone number and fill in the SMS code as prompted. If the system asks you to complete email or Google verification, do it in order.
Completion standard: On the security settings page, the phone number shows "Verified" and appears in your login methods list.
Common situations and reasons
Can it be used as a login name after binding? Yes. Once the phone number is bound, the system usually lists it as one of the available login accounts. You can choose to log in with "email + password" or "phone number + password".
What if the old number is no longer in use? If the old phone number cannot receive a verification code, you cannot change it directly. You need to go through a manual appeal process. Prepare your account information and identity verification, and submit a request through customer service.
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How to verify after binding
After binding, log out and try logging in once with "phone number + password". Confirm that you can receive the SMS and enter your account. After that, you can enable two-factor verification with "phone number + email", or require phone verification for sensitive operations such as withdrawals.
