How to use SMS filtering service?

1, SMS filtering service means that in order to avoid malicious harassment, users can set the filtering conditions of SMS according to mobile phone number, keywords and time period. After setting, the mobile phone will automatically reject spam messages.

2. SMS filtering service features: flexible, and information filtering can be set in various ways; Security, to protect users from information harassment; Automatically, automatically filter spam messages according to user needs; Free of charge, free of function fee