Yohan Yukiya Seseㆍ사요한・謝雪矢@jepoy Interesting!
I wonder what the reason is actually why they have this "old number" reason. Theoretically (logically?), it should be easy to transfer to the new system / database since these are prepaid SIMs. I would understand if these were postpaid, since grandfathered plans probably are not in the new system.
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