Log in to your OKCoin.com account. If you didn’t provide your cell phone number when you created the account, you’ll be prompted to add it now.
To update your number, go to Profile settings under the profile icon, then go to Security settings. Click on Mobile verification.
Note - You’ll need the previous mobile number to receive the SMS authentication code.
Note - When you change your cell phone number, you will have to wait 24 hours before making a withdrawal.
To unlink your cell phone number, please email email@example.com to have a customer support agent do that for you.