SMS Fallback is a backup OTP delivery process where SMS supports WhatsApp verification. In India, varying network conditions make this approach important. SMS Fallback improves OTP success rates and reduces user frustration. anantya.ai builds secure OTP delivery systems that combine WhatsApp and SMS efficiently. This hybrid method supports large user bases and ensures consistent verif... https://anantya.ai/blog/sms-fallback-for-whatsapp-otp-india/