"Mobile number is mandatory to receive a password for login," according to the UIDAI website - uidai.gov.in. This mobile number is the one registered at the time of applying for Aadhaar. Users can log into the Aadhaar self-service update portal and submit a request in three steps, the UIDAI portal added. These steps are: login with Aadhaar number, upload documents and select the service provider.
How to update Aadhaar card address
Visit the UIDAI website to find and click on the 'Update Aadhaar Details (Online)' tool. This tool can also be accessed through its link.(Find and click on the 'Update Aadhaar Details (Online)' link on the UIDAI portal)
Source : http://www.ndtv.com/business/aadhaar-changed-address-how-to-update-it-on-aadhaar-card-1751582