The ability to prevent communication from unwanted senders on an Android device extends to both phone calls and SMS/MMS messages. This functionality effectively stops future attempts from a specified number to contact the device owner via text or call. For example, if a user receives unwanted solicitations via SMS, the user can employ the blocking feature to prevent further messages from that source.
This capability is important for managing unwanted contacts, mitigating spam, and enhancing user privacy. Historically, mobile users had limited options for filtering communications, often relying on third-party applications. Modern Android operating systems integrate blocking features directly into the core functionality, offering users more direct control over their communication streams. This reduces reliance on external apps and provides a more seamless user experience.