It is a necessity to have your mobile number linked to your Aadhaar Card. 

To link your Aadhaar with your phone number, you will have to visit your service provider’s outlet. Follow the process mentioned below to link your Aadhaar with your mobile number.

Step 1: Visit your telecom operator’s outlet/store.
Step 2: Carry a self-attested copy of your Aadhaar card.
Step 3: Provide your mobile number.
Step 4: The store executive will send an OTP to the mobile number that has to be linked.
Step 5: Provide the OTP to the executive for verification.
Step 6: Now provide your fingerprint to the executive.
Step 7: You will receive a confirmation SMS from your telecom operator.
Step 8: Reply ‘Y’ to complete the e-KYC process.