What makes a mobile recharge app secure

A secure mobile recharge app implements strong security measures like PCI-DSS compliance and encrypted transactions (e.g., AES-256). Key features include Two-Factor Authentication (2FA), UPI PIN protection, OTP verification, and fraud detection using AI/ML. Users should only download apps from official app stores to ensure application integrity. Paytm, for instance, offers advanced in-app protections like app lock with biometric authentication.