The Department of Telecom's new SIM-binding rules take effect on January 1, 2027, requiring messaging platforms like WhatsApp and Telegram to verify active SIM cards for registered Indian mobile numbers.
Messaging apps must ensure accounts are tied to an active SIM or eSIM present on the device by the December 31, 2026 deadline to prevent access restrictions.
The framework aims to combat cybercrime, phishing, and digital arrest scams where accounts function even after the associated SIM is removed or deactivated.