Adding a mobile number to Aadhaar doesn’t require any document. Just carry your Aadhaar to any nearby Aadhaar Center to place an add/update mobile number request.

Update your mobile number with Aadhaar card without any documents
However, if your mobile number has not been updated with your Aadhaar card, you need not worry at all. You can update your mobile number with Aadhaar card without any documents. The Unique Identification Authority of India (UIDAI) made this known in a recent tweet. UIDAI tweeted, “You don’t need any kind of document to add mobile number along with Aadhaar number.” All you have to do is take your Aadhaar card and go to the nearest Aadhaar Center. You can send your new mobile number add or update request to Aadhaar Service Center.
As soon as the mobile number is updated, you will be able to avail various services connected to Aadhaar
Let me tell you, it is very important that your mobile number is updated in the Aadhaar card. It will also help you to take advantage of the various services connected to your support. With this, once the mobile number is updated, you can update various details up to name and address in the Aadhaar card while sitting at home. Apart from this you can also e-verify your income tax return. Apart from this, you can also avail all the services connected with EPF at home.
Important Link :
Find your nearest Aadhaar Center here https://bit.ly/32uJpus