India forces caller-ID apps to share spam reports with telecom operators

India has extended its anti-spam regime to require caller-ID and call-management apps to share users’ spam reports with telecom operators, prompting spam-blocking app maker Truecaller to call the rule anti-competitive. On Friday, the Telecom Regulatory Authority of India (TRAI) amended rules governing commercial communications, making it mandatory for caller-ID and call-management apps that let users flag calls as spam or junk to send those reports to a blockchain-based platform maintained by telecom operators that tracks commercial communications and enforces anti-spam rules. TRAI said the change is meant to broaden the pool of spam reports available for action against spammers. Truecaller, however, told TechCrunch it sees the requirement as a “one-way exchange” that is “anti-competitive,” arguing it transfers commercially valuable data from call-management apps like itself to telecom operators.

India is Truecaller’s largest market, accounting for well over 350 million of its more than 500 million monthly active users globally; the Stockholm-based company uses community reports alongside automated detection and other signals to identify and block spam calls. In a February report, Truecaller said its users in the country encountered around 42 billion spam calls in 2025, including calls that were blocked, labeled, or ignored, and that it blocked nearly 12 billion spam calls during the year. This isn’t the first clash between Truecaller and the regulator: the company had previously objected to restrictions preventing call-management apps from automatically labeling calls from certain government-designated number ranges as spam, arguing the exemption could let unwanted calls escape its filters. Friday’s amendments retain that restriction and also bar call-management apps from blanket blocking, filtering, or spam-tagging calls from designated number series used for promotional, service, and transactional communications, though individual users can still block such calls themselves.

Sumeysh Srivastava, a partner at New Delhi-based consulting firm The Quantum Hub who leads its telecom-regulation policy work, said the change bridges two distinct layers: telecom operators provide the underlying network and run the blockchain-based anti-spam system, while caller-ID apps operate on top of the network to identify and filter calls — raising questions about what reporting standards apps must follow and how the rule will be enforced against companies that aren’t themselves telecom operators. Kazim Rizvi, founding director of policy think tank The Dialogue, said requiring an app to transmit a specific user spam report is materially different from requiring it to share the broader datasets or systems it uses to identify suspicious calls, and that the rules will need clarity on what must be transmitted and how the data can be retained and used.

The amendments also bring automated and AI-voice calls under TRAI’s application-to-person (A2P) framework: companies using such systems must declare their use and phone numbers to telecom operators in advance, and undeclared A2P calls will be treated as spam. Telecom operators will also be allowed to levy a termination charge of up to 5 paise (about 0.052 cents) per minute on A2P calls, with certain designated number ranges exempt. Srivastava said the key test is how a call is initiated rather than whether it uses an AI-generated voice, leaving some uncertainty around AI-assisted calls that still involve a human initiating them.

Why it matters

By routing spam data from independent apps into a telecom-operator-run platform, India is centralizing anti-spam enforcement in a way that could reshape the competitive position of third-party caller-ID apps across one of their largest global markets.