Dial 121 (general support) or 198 (complaint helpline).
This is the most direct way to block your number, especially if you have lost your device. how to block my airtel sim card
If your Airtel SIM card is lost or stolen, blocking it immediately is critical to prevent identity theft and financial fraud. Dial 121 (general support) or 198 (complaint helpline)
If your phone was stolen along with the SIM, remember to also request your bank to temporarily freeze your accounts or disable mobile banking until you recover your number on a new SIM. If your phone was stolen along with the
If you have access to another device, you can use the official app to initiate a block: Open the Airtel Thanks App and log in. Navigate to the or 'Support' section.
Here is a step-by-step guide on how to block your Airtel SIM card.