Due to Korean mobile policy, Prepaid SIMS certified by passports are valid for only 90 days. So, even if you have your credit left, your mobile services are not available, unless you recertify yourself with ARC. To do so, you need to contact the T-World customer center to use your SIM continuously.
- If you certified your ID by Passport, you can only use your SIM for 90 days.
- If you want to prolong your service, you have to re-certify yourself with ARC.
- Contact 080-252-5011 (English, Japanese and Chinese speakers are available.