My mobile phone is always harassed by malicious text messages. what can I do?

This is our short message filtering service. 1, SMS filtering service mainly aims at spam or malicious SMS harassment and provides users with filtering means. After subscribing to this service, users can set the filtering conditions of short messages by number, time period and keywords, and the short messages that meet the filtering conditions will be automatically filtered out by the system. In this way, users can reject spam messages and avoid malicious harassment. 2. Applicable customers: applicable to mobile users of China Telecom. 3. Mobile phone terminal: In order to ensure the basic functions of the service, the mobile phone terminal must support SMS. For better user experience, mobile phones are recommended to support flash SMS and WAP Internet access. Description of filtering range: Non-point-to-point SMS cannot be blocked. Priority: The priority order of the four filtering conditions of SMS filtering service is: time period filtering, blacklist or whitelist, and keywords. The same number cannot be whitelisted and blacklisted at the same time. For more service benefits, click on "official website" customer service 220 below to answer your questions.