Should US Users Sign Up for OKX with Phone Number or Email?
Here's the direct answer: When registering on OKX (OKX) as a US user, your first choice should be email, with phone number as a backup. This is because OKX US (the dedicated platform for US residents) mandates both email and phone verification as part of its compliance requirements—you cannot choose just one. For long-term use, email is also more stable and secure than a phone number.
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Why isn't there a "pick one" option in the US?
OKX's global platform no longer accepts US residents. American users must use OKX US, which enforces stricter registration procedures to comply with state-level regulations. Although the sign-up page shows "Sign up with email" or "Sign up with phone number", in practice whichever you choose, the system will later require the other (source: OKX official Help Center, 2026-07-27).
For example, if you sign up with email first and complete email verification, the next step will force you to bind a phone number—and vice versa. So the most practical approach is to have both ready in advance.
Step-by-step: How to complete registration correctly
Pre-requisites:
- A long-term, stable email address (Gmail or Outlook recommended).
- A US phone number (+1) that can receive international SMS.
- Ensure your network IP address is located within the United States and that you physically reside in a state where OKX US operates.
Scenario A: Registering via web browser (recommended)
- Open the official website: Go to the OKX US official site (okx.com/us). Do not use the global OKX platform; accounts are not shared.
- Choose registration method: Click [Sign Up], enter your email address and an optional referral code, then click next.
- Email verification: Check your inbox for the 6-digit verification code, enter it, and confirm. The code is usually valid for 10 minutes.
- Bind phone number: On the following page, you'll be forced to add a phone number. Select "United States" as the country (the area code +1 will appear automatically), enter the last 10 digits of your phone number, and click "Verify Now".
- SMS verification: Input the SMS code sent to your phone to complete binding.
- Set password: Create a strong login password (a mix of upper- and lower-case letters, numbers, and special characters is recommended), then click finish.
Completion check: The page should display "Registration successful", and under [Security Settings] you should see both "Email verified" and "Phone number verified".
Scenario B: Registering via the mobile app
- Download the app: Search for "OKX US" in the Apple App Store or Google Play Store to download the dedicated US app. Do not download the global app.
- Fill in details and verify: The flow is similar to the web version. You'll be prompted to enter your email and phone number sequentially, and each will require a verification code.
About phone number: After registration, remember to remove SMS from your two-factor authentication (2FA) methods in Security Settings and switch to a Google Authenticator app. An authenticator app (e.g., Google Authenticator) is more secure than SMS and helps protect against SIM-swap attacks. SMS verification was removed from the withdrawal verification flow starting June 2024.
Common reasons for failure
- IP address mismatch: The country you entered is United States, but your IP geolocation shows a different region—the system will reject the registration. Make sure you are using a US-based network.
- Not receiving verification codes: Check your email spam/junk folder; verify that your phone isn't blocking messages; confirm your phone number can receive international SMS.
Risk reminders
- Feature limitations: OKX US has a significantly narrower product offering compared to the global platform. US users typically cannot access futures, perpetual swaps, or other high-leverage derivatives. Fiat on/off ramps are mostly limited to ACH bank transfers.
- Tax compliance: As a US user, every trade on the platform may be reportable (e.g., IRS Form 8949). Always keep detailed transaction records and ensure your source of funds is legitimate.
A leading global cryptocurrency platform,suitable for both beginners and experienced traders.
New user benefit: 20% off trading fees upon registration!！
Confirmation of completion
Log in to the OKX US website or OKX US app and go to [Security Settings]. Verify that both email and phone number are shown as "Bound". After registration, the system will require identity verification (KYC). We recommend uploading your passport or driver's license immediately; your account will only be fully functional once the KYC review is approved.
