What to Do If You're Not Receiving SMS Verification Codes on OKX
Try these four steps first: restart your phone, check if messages are blocked, clear the app cache, and click "Didn't receive anything?" to switch to voice verification. If none work, you can use email verification, voice call, or WhatsApp/Telegram to receive codes on the app. The verification code is valid for 10 minutes. Entering the wrong code 6 times in a row will temporarily lock your account.
1. Four Priority Steps When You Don't Receive SMS
Listed in order of success rate from high to low:
Restart your phone. A phone that hasn't been turned off for a long time may affect signal reception. Restart and request a new code.
Check blocking settings. See if security software or system settings have automatically blocked SMS messages. Turn off SMS blocking apps and try again.
Clear your SMS inbox. A full inbox can prevent new messages from being received. Delete some old messages.
Switch platforms. If you can't receive codes on the app, try the web version (or vice versa). Clear the browser/app cache before requesting a new code.
2. Change Verification Channels: Click "Didn't Receive Anything?" on App, "Call Me Instead" on Web
On the app, on the verification code input page, click"Didn't receive anything?"and the system will offer several alternatives:
Switch tovoice verification(system calls and reads the code)
Useemail verification code
If you have anauthenticator appbound (e.g., Google Authenticator), use the dynamic code directly
In some regions, receive codes viaWhatsApp or Telegram
On the web, click"Call me instead"and the system will call your bound phone number and read the verification code.
3. Dual SIM and Number Portability Issues
Dual SIM phones: If you have two SIM cards, tryswapping the SIM card slotsand then resend the verification code.
Number portability users: If you recently changed carriers but kept the same number, you may have issues receiving SMS. Contact customer support to explain the situation.
4. Cooldown Time After SMS Send Failure
If the page clearly shows"SMS send failed", wait about2 hoursbefore trying again. Frequent requests may trigger rate limiting, so wait until the cooldown period ends.
5. If You've Tried Everything and Still Can't Receive Codes
Follow the account recovery process:
On the app login page, select"Didn't receive anything?"and follow the prompts to use another verification method to log in.
If you're already logged in but can't receive codes (e.g., when modifying security settings), tryself-service phone number change—follow the in-app instructions to complete identity verification and unbind the old number.
If self-service fails, contact live support via theOKXapp/website's [Help Center] → [Online Customer Service]. Use your bound email to communicate for faster identity verification.
After changing or unbinding your phone number, you cannot withdraw or conduct C2C selling for 24 hours.
FAQ
Is voice verification charged?No official charge has been found. Voice verification is an alternative channel; it's recommended to use free SMS verification first.
What if I can't receive OKX SMS abroad?Your local carrier may block international SMS. Try voice verification first. If voice also fails, prioritize email verification or an authenticator app. On the app, check if WhatsApp/Telegram options are available; they are supported in some regions.
The code shows "Sent" but I never received it. Can I click "Resend"?Yes, but don't click too frequently. Wait at least 60 seconds before retrying. If SMS sending fails, follow the 2-hour cooldown rule above.
Remember: when you can't receive SMS, the often overlooked"Didn't receive anything?"button on the app login page is usually more effective than repeatedly clicking "Resend."
