SIM binding rules go live starting March 1: These WhatsApp, Telegram, Signal and other messaging app users to be impacted

Starting March 1, messaging apps like WhatsApp, Telegram, Signal and others must comply with the Department of Telecommunications' SIM-binding rule—a directive that ties your app access directly to the physical SIM card in your phone.

The order, issued on November 28 under the Telecom Cyber Security Rules, 2024, gave platforms 90 days to fall in line. That window closed on February 28, and the government has made it clear there will be no extension.

What SIM binding actually means for your phone

Until now, most messaging apps followed a simple verify-once model. You'd enter your number, get an OTP, and you were set—even if you later removed the SIM or switched to a different device. That changes now.

Under the new framework, apps must check that the registered SIM is physically present and active in your primary device. If it's removed, swapped or deactivated, the app stops working until the original SIM is back in and verified again.This applies to all major platforms—WhatsApp, Telegram, Signal, Snapchat, ShareChat, JioChat, Arattai and Josh. The rule covers only India-registered accounts.

WhatsApp Web users, frequent travellers and multi-device users to be impacted

The biggest day-to-day impact will hit WhatsApp Web and desktop users.

Sessions will now auto-logout every six hours, requiring a fresh QR code scan from the phone with the active SIM. If you rely on WhatsApp Web for work, expect interruptions.Multi-device setups also take a hit. Features like Linked Devices, which let you use WhatsApp on tablets and secondary phones without the primary device being online, will now depend on the SIM being present in your main phone. Wi-Fi-only tablets and SIM-less devices could face repeated re-authentication prompts.Travellers who frequently swap SIMs or use eSIM-only setups may also run into issues if the registered SIM isn't detected as active. That said, the government has clarified that users who are roaming will not be affected as long as the SIM stays in the device.

Why the government made SIM-binding mandatory

The DoT has linked SIM binding to a sharp rise in cyber fraud. Officials say scammers have been authenticating Indian numbers once and then operating accounts remotely—sometimes from outside the country—making them nearly untraceable. According to government data, cyber fraud losses in 2024 crossed Rs 22,800 crore. Communications Minister

Jyotiraditya Scindia

has defended the move, calling it essential for national security and digital traceability.