HDFC Bank warning: UPI, mobile banking down Dec 13 and 21, 2025 for maintenance.

• HDFC Bank announced scheduled system maintenance on December 13 and December 21, 2025.
• Maintenance will occur from 2:30 AM to 6:30 AM on both dates to upgrade systems and improve banking efficiency.
• During these periods, UPI services, RuPay credit card payments, and mobile banking app transactions will be unavailable.
• Third-party apps relying on HDFC Bank for UPI processing will also be affected.
• Customers are advised to use the PayZapp wallet for payments and transfers during the maintenance windows.

Why It Matters: HDFC Bank customers face service disruptions due to maintenance; use PayZapp.