What is the effect of black-and-white list processing on users of industry short message service?

Interception of received messages according to the calling and called subscriber number or number segment can be set as calling blacklist, calling whitelist, called blacklist and called whitelist respectively. Thank you for your interest in telecom products. I wish you a happy life. If the above information can't solve your problem, you can also log in to Guangdong Telecom Mobile Mall () to seek help from online customer service, which is available 7X24 hours a day!