Tech DeskLast Updated: 01 Mar 2026, 11:05 am ISTShare New SIM-binding rule from March 1 changes how WhatsApp and Telegram function, requiring active SIM verification and periodic web re-authentication. Representational Image: WhatsApp iPhone mobile app icon | Photo: Hoch Zwei/Corbis via New Delhi: Starting March 1, messaging platforms such as WhatsApp, Telegram and other apps that rely on mobile number-based login must comply with a new SIM-binding rule issued by India’s Department of Telecommunications (DoT). The directive, originally issued on November 28, gave companies 90 days to implement the required changes.
