How to cancel Unicom's letter? Why did you send pbyw back to 10655 133? Yes, the password entered is wrong. Why?

Hello, the code you sent is a way to block "Unicom is in the letter", not a way to cancel it. The way to cancel should be to send a free short message "00000" to 10655 133 to unsubscribe from all Unicom's letter services; If you need to unsubscribe from a single service, you can send "0000" or "00000" to the corresponding SP SMS access number (this SMS charges 0. 1 yuan SMS communication fee); After the successful unsubscribe, the monthly business fee will not be charged from the next month. If it is blocked, send "pbyw" to 10655 133, and send "GBYW" to 106559342 to apply for blocking the convincing function of Unicom. Send both short messages. It should be reminded that if "Unicom is in the letter" is blocked, the service will not be charged in the future, but it may affect the reception of business information such as banks or other enterprises (such as bank card balance change reminder).