Truecaller

Truecaller is a smartphone app designed to help users identify unknown callers and block unwanted phone calls, such as spammers or telemarketers. It works by leveraging a vast database of phone numbers contributed by its users, allowing it to provide information about who is calling, even if they are not in your contacts. When you receive a call, Truecaller displays the caller's name and other details, helping you decide whether to answer. The app also enables users to search for people by their phone numbers and provides messaging features. It is popular for enhancing phone privacy and communication management.