»UPI Payments via Google Pay, PhonePe and More May Not Function Properly For Few Days, Here's Why 2-MIN READ UPI Payments via Google Pay, PhonePe and More May Not Function Properly For Few Days, Here's Why Representative image. Currently, there are 165 banks listed on the BHIM UPI platform, according to the information available on the NPCI website. The organisation says that the upgradation process will take place for the next few days from 1 AM - 3 AM. FOLLOW US ON: Customers using UPI (or Unified Payments Interface) for online transactions may face errors between 1 AM to 3 AM IST for the next few days as the National Payment Corporation of India (NPCI) is upgrading its digital payment platform. The development essentially means that users who are transacting through the UPI gateway via BHIM or third-party apps such as Google Pay, Paytm and PhonePe may face inconvenience between the allotted time period. The NPCI has not specified the exact days for the upgradation process, saying that it would take place for the "next few days." The UPI platform is being upgraded to provide a "better, safer experience."