India’s telecom regulator has ordered caller-ID and call-management apps to share users’ spam reports with telecom operators, linking app-based reporting to the industry’s blockchain-backed anti-spam system. The policy aims to give operators more data to identify and act against spammers, but Truecaller, India’s largest caller-ID app, says the requirement is an anti-competitive one-way transfer of commercially valuable information.

India is dealing with spam calls on a massive scale: Truecaller said its users encountered about 42 billion spam calls in 2025, while the company blocked nearly 12 billion. The amended rules also retain restrictions on automatically labelling or blocking calls from certain government-designated number ranges, although users may still block them individually; questions remain over the reporting standards, enforcement arrangements and the amount of data apps must provide.