How to modify the service password of Unicom mobile phone card through SMS?

Password modification: edit the short message "MMXG# old password # new password # new password" and send it to 100 10 for password modification.

Password reset: edit the short message "MMCZ#6 new password #6 ID number" and send it to 100 10. After the first message is successfully sent, you will receive the second message: "Dear users, please reply" mmcz # * * * "(4-digit random verification code information) to confirm that your service password will be reset to * * *.