SMS Fallback guarantees every customer receives verification codes by switching from WhatsApp to text when connectivity fails. This technical guide reveals why 40% of India's population in smaller cities needs backup delivery and how to implement it correctly. Learn how Anantya.ai optimizes SMS Fallback routing to balance speed and cost, achieving 99%+ success rates. Contains real Mum... https://anantya.ai/blog/sms-fallback-for-whatsapp-otp-india/