Aadhaar Card Update: How to change date of birth, mobile number, address on Aadhaar in a few minutes In the event users face any issue, Aadhaar asked users to get in touch with them via email at help@uidai.gov.in or by calling the toll-free helpline. File Photo Updated: Jul 2, 2021, 08:46 AM IST UIDAI has added a new update to its official portal that allows the citizens who have moved to a new residential address to change the said address on their current Aadhaar identification. This self-service portal on the Aadhaar website helps the users to make these changes all by themselves.