If the verification code text message does not arrive
CLASS101 requires phone number verification when signing up. If you are not receiving the verification code, please check the following.
1. Check your device's spam block list
The CLASS101 verification code may have been blocked as spam. Please check whether the number 1800-2109 is blocked by following the steps below.
Android (Galaxy): [ Messages > Settings (top right ...) > Spam and blocked numbers > Block/Unblock or View blocked messages ]
iOS (iPhone): [ Settings > Apps > Messages > Blocked Contacts ]
After unblocking spam, please request the verification code again.
2. Check carrier-level spam blocking
Each carrier also operates its own spam blocking service. Please check the link below for more details.
https://www.postplus.co.kr/EgovPageLink.do?link=po/htm/MessagePolicy2
Other troubleshooting
Please make sure to try both methods described above. If the issue still isn't resolved, contact our Customer Support Center.
Contact Customer Support
For any other inquiries, please reach out to the CLASS101 online Customer Support Center.