Why can't Xiaomi mobile phone card 2 be corrected?

The reason of the short message of the operator. Xiaomi mobile phone card 2 can't be corrected because the operator's short message can't be corrected, resulting in unlimited traffic can't be analyzed, so it can't be corrected. You can give feedback to the operator. SIM card is the subscriber identification card of digital cellular mobile phone, which plays an extremely important role in GSM digital mobile phone system.