Richa Singh
The first step is to immediately contact your mobile operator's customer service or support.
When you contact customer service, be prepared to provide the necessary information.
Inform the customer service representative that you have lost your SIM card and request them to block it immediately to prevent any unauthorized use.
The customer service representative may verify your identity and ownership of the SIM card through security questions or other means.
Once your identity is verified, the customer service representative will proceed to block your SIM card.
If you want to continue using the same mobile number, inquire about the process to get a replacement SIM card.