SMS Fallback works as a safety layer for OTP verification when WhatsApp messages are not delivered on time. In Indian markets, network instability and DLT compliance often affect OTP success rates. Using SMS Fallback between WhatsApp and SMS helps businesses achieve consistent OTP delivery and better user experience. Providers such as anantya.ai design intelligent routing where SMS Fa... https://anantya.ai/blog/sms-fallback-for-whatsapp-otp-india/