India Mandates SIM Link for Messaging Apps

30 Nov 2025

In a significant policy change, India's Department of Telecommunications (DoT) mandates that messaging apps like WhatsApp and Signal must be linked to an active SIM for continuous use. This directive aims to enhance cybersecurity and prevent misuse of apps from abroad.

Compliance and Reporting Requirements

Messaging app providers such as WhatsApp, Signal, Telegram, and others must adapt their services to align with this new requirement. They are required to submit compliance reports to the DoT within 120 days. The DoT warns of penalties under the Telecommunications Act, 2023, for non-compliance.

  • Telecom User Identifiers must ensure apps are linked to active SIMs within 90 days.
  • The directive includes app providers of WhatsApp, Signal, Telegram, and others.
  • The regulation is part of the Telecom Cyber Security Rules.

Cybersecurity Enhanced Measures

The guideline comes after government findings revealed that some apps could be accessed without the SIM card, enabling overseas cyber-fraud. By requiring app access to be tied to an active SIM, the DoT aims to strengthen security.

Web versions of these apps must also comply by logging users out every six hours and requiring re-linking through a QR code.

Impact and Enforcement

This policy, which takes immediate effect, places additional pressure on messaging services to bolster their security frameworks. Companies need to ensure compliance to avoid potential legal consequences and maintain their market positions in India.

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