How to restrict a number from joining my phone number or sending short messages to my phone number?

At present, there is no function to restrict a certain number from entering a telephone number. If you need to restrict a certain number from sending short messages to your mobile phone, it is suggested that you can apply for short message filtering. SMS filtering is a service subscribed by the called party. After subscribing to this service, users can set short message filtering conditions according to calling number, time period and keywords, and the short messages that meet the filtering conditions will be automatically filtered by the system. This can also reject spam messages and avoid malicious harassment. For more service offers, click on "official website" Customer Service 2 18 below to answer your questions.