Spam Blocker - Phone Block is a free Android application designed to combat unwanted calls and enhance user privacy. It features a robust call filtering system that includes a spam call blocker, phone number lookup, and SMS messaging capabilities. The app automatically blocks spam calls and provides users with the ability to identify unknown numbers, ensuring a more secure communication experience.

Key functionalities include a call scanner that detects spam calls before they ring, a default SMS and dialer replacement for unified management, and customizable ringtone settings. Users can create a blacklist to permanently silence unwanted calls and utilize reverse number search to trace callers. Overall, this app aims to simplify phone call management while safeguarding against spam and fraudulent activities.