The power to forestall incoming communication from unidentified sources on a cellular system supplies a way for customers to handle undesirable disturbances. For instance, a person can configure their system to mechanically reject calls from any quantity not current of their contact checklist, thereby mitigating potential spam or harassment.
This characteristic gives elevated privateness and reduces the probability of being focused by unsolicited advertising or fraudulent schemes. Traditionally, reliance on third-party functions was crucial to attain this performance; nonetheless, trendy working methods now sometimes embrace this functionality as a typical safety measure.