Confronting the Flash Call Conundrum: Detection, Monetization, and Real-Time Solutions for Mobile Operators Within recent years, flash calling has become a hot industry topic. This one-time password (OTP) or two-factor authentication (2FA) method involves triggering a missed voice call or over-the-top (OTT) call to subscribers, eliminating the need for a traditional application-to-person (A2P) SMS containing [...]