No. Anyone in India with a smartphone can install and use mAadhaar App. Without an Aadhaar registered mobile number resident will be able to avail only a few of the services such as Order Aadhaar reprint, Locate Enrolment Center, Verify Aadhaar, Scanning QR code etc. However registered mobile number is mandatory to avail all other Aadhaar services and Aadhaar Profile services listed under My Aadhaar.  Resident can register their profile in an App installed in any smartphone. However the OTP will be sent to only their registered mobile.