India’s Telecom Regulatory Authority (TRAI) has updated its commercial communications rules to mandate that caller-ID and call-management apps share spam call reports with telecom operators. This data must now be uploaded to a blockchain-based platform run by the operators, aimed at enhancing spam call detection and enforcement. TRAI’s intention is to integrate reports from apps into the wider telecom ecosystem to combat the country’s massive spam call problem more effectively.

Truecaller, a leading spam-blocking app and one of the largest players in India with over 350 million users there, has criticized the new regulations as anti-competitive. The company argues the one-way sharing forces it to hand over a valuable proprietary asset—user-generated spam data—to telecom operators without reciprocal access. Truecaller has faced regulatory friction before, notably concerning restrictions on labeling government-designated number ranges as spam, which the company views as undermining its ability to protect users fully.

Alongside the data-sharing mandate, TRAI has clarified rules concerning artificial intelligence and automated calls. AI-generated or robocalls are now regulated under an application-to-person (A2P) framework, requiring businesses to declare their use and associated phone numbers to telecom operators prior to making these calls. Unregistered A2P calls will be classified as spam, and operators may impose a termination fee. However, calls from certain promotional or transactional number ranges are exempt, and users retain the right to block such calls individually.

The amended regulation raises technical and privacy questions, especially about what specific information apps must share, how user consent is managed, and the enforcement mechanisms for non-telecom companies. Experts suggest clarity is needed to ensure data sharing does not encroach on broad datasets or reputation analytics. TRAI has not publicly detailed these operational specifics, and it remains to be seen how the rules will affect not only caller-ID apps but also native spam-reporting tools in smartphones and operating systems like Android and iOS.