Blocking a contact on an Android device restricts certain forms of communication between the user and the blocked party. Specifically, the blocked contact’s calls and text messages will not reach the user’s device. The user will neither receive notifications nor be alerted to any communication attempts from the blocked number. Previously sent messages will remain in the message history unless manually deleted by the user.
This feature provides a critical tool for managing unwanted contacts and preventing harassment. Historically, individuals seeking to avoid communication had limited options, such as changing phone numbers. Modern blocking functionality offers a more convenient and discreet solution. This ability to control communication streams enhances user privacy and promotes a more secure mobile experience.