Update your mobile number linked to Aadhaar before you actually need OTP verification
Fix it now, not while you are stuck at a bank counter needing an OTP.
Why it works
Aadhaar-based OTP verification only works if the number on file is one you still hold. People replace SIMs and switch carriers often enough that a years-old registration silently goes stale, and you only find out when a verification fails in front of someone waiting on you.
Did it work for you?
One tap, one report per person. Reports are how we find out which fixes don't hold up.
Related fixes
Download the digital Aadhaar (mAadhaar) instead of carrying the paper copy
Accepted everywhere the paper card is, without the paper card.
Passport appointment slots release in the evening, not the morning
Be logged in and waiting at the release time for your PSK.
Book a government office appointment online instead of walking in
A ten-minute booking beats a two-hour queue.
Keep vehicle papers as DigiLocker copies, not just the glovebox originals
A traffic stop accepts the digital copy exactly like the original.
Two extra photocopies of everything, in a separate folder from the originals
The one thing that turns a second trip into no second trip.
Renew your driving licence in the window before it expires
Miss the window and you may be back to a fresh test.