How to link an Aadhaar card with a SIM card?

To link your Aadhaar card with a SIM card, you must visit an authorized Aadhaar Enrolment Centre or your telecom operator's store. For first-time linking or updating an unregistered number, UIDAI requires in-person biometric authentication (fingerprint or iris scan) to ensure security. You need to fill out an update form and provide your Aadhaar number. A fee of Rs 50 is typically applicable for this service. While existing linked numbers can sometimes be re-verified via IVR or operator portals, initial registration cannot be completed purely online.