In a major step towards curbing spam and fraudulent calls, Bharti Airtel has upgraded its AI-based spam detection system, expanding its capabilities to include international numbers and support for 10 Indian languages. The move aims to significantly improve user protection across its 400+ million subscriber base in India.

The enhanced system, built on Airtel’s proprietary AI and machine learning framework, will now be able to analyze and block spam calls originating from foreign numbers—an increasingly common tactic among cybercriminals and scam callers. By extending detection capabilities beyond domestic calls, Airtel hopes to address the growing concern of international phone scams, many of which target unsuspecting users with financial fraud or phishing attempts.

Multilingual Intelligence for Wider Reach

Recognizing India’s linguistic diversity, Airtel has integrated support for 10 regional languages into the AI system. This upgrade will allow the spam filter to understand and flag malicious intent in voice calls and messages made in languages such as Hindi, Tamil, Telugu, Bengali, Marathi, Kannada, Malayalam, Punjabi, Gujarati, and Odia.

“Spam and scam calls are becoming more sophisticated, often exploiting language and regional nuances to deceive people. With this upgrade, our AI can now understand the context in multiple Indian languages, making it far more effective in real-time detection,” said a senior Airtel executive involved in the development.

Crowdsourced Intelligence and Real-Time Analysis

The updated system also leverages real-time crowdsourced data to improve its decision-making. Customers can report suspicious numbers via the Airtel Thanks app, which feeds into a continually evolving database. This collaborative approach enables the AI model to identify emerging spam patterns quickly and adapt faster than traditional systems.

Additionally, Airtel’s backend systems analyze millions of call and message patterns daily to identify anomalies that could signify spam behavior. These insights are cross-referenced with user reports, helping refine the AI's accuracy and reduce false positives.

Regulatory Compliance and Privacy-Focused Design

The upgrade aligns with recent directives from the Telecom Regulatory Authority of India (TRAI), which has urged telecom operators to take stricter measures against unsolicited commercial communication (UCC). Airtel confirmed that the system is designed with a privacy-first approach and does not record or store voice calls. The AI models work on metadata and anonymized samples to ensure user data remains secure.

What This Means for Users

With this update, Airtel users can expect a substantial drop in spam calls and messages, particularly those originating from international numbers or using regional language-based scams. Users will also have the option to view spam reports and mark numbers as spam directly through the Airtel Thanks app interface.

As spam continues to evolve, Bharti Airtel’s AI-driven initiative represents a forward-looking approach to telecom security—one that embraces local context, leverages crowd intelligence, and reinforces user trust.