SMS Fallback eliminates verification bottlenecks by providing instant text backup when WhatsApp messages don't arrive. This best practices guide covers critical implementation details that separate successful systems from failed attempts. Learn how Anantya.ai configures SMS Fallback triggers for 2-3 second response times instead of frustrating 30-second waits. Shows why hybrid deliver... https://anantya.ai/blog/sms-fallback-for-whatsapp-otp-india/