Truecaller is an all-in-one caller ID and spam prevention app designed to identify unknown numbers and block unwanted calls. It utilizes a large worldwide database of phone numbers to enable users to recognize calls from numbers not saved in their contacts. The app also offers features such as call recording, SMS filtering, and contact management.

Yes, Truecaller is generally safe. It is a trusted application available on both Android and iOS platforms with millions of users globally. The app requires access to contacts and call data to operate effectively but encrypts this information to protect user privacy and security. Always download the app from official app stores to minimize security risks.

Truecaller is designed to be resource-efficient and should not significantly impact your device’s battery life or performance. Like other background apps, it may consume some resources. To ensure optimal operation, keep the app updated to the latest version and adjust your device settings to manage background activity and battery use.

Truecaller is highly effective at filtering spam calls and messages. It maintains a community-driven spam list, constantly updated by millions of global users. This real-time database enables the app to precisely identify and block spam, telemarketing, and unwanted messages. Users can also customize settings to block specific numbers or types of calls according to their preferences.

Yes, an internet connection is necessary for Truecaller to function properly. The app accesses its online database to identify numbers and update spam lists. While some offline features, like blocking saved spam contacts, may work without internet, complete functionality such as real-time caller ID and spam list updates requires an active internet connection.