How to open UPI in phone?

To set up UPI on your phone, first install a UPI-enabled mobile app from your smartphone's app store. Open the app and complete registration by providing your mobile number. Ensure this number is the same one registered with your bank. Link your bank account and verify your details, often using your debit card or Aadhaar details to set a UPI PIN. For instance, you can use the Paytm App and go to UPI & Payment Settings to add and verify your bank account.