Why SMS Auth Is Quietly Failing Your Users (And How to Fix It With WhatsApp)

Here is something most developers shipping SMS OTP in 2026 do not want to sit with: the channel they are trusting to verify their users is failing roughly one in ten of them, costing the industry $71 billion per year in fraud, and is actively being legislated out of financial services in the UAE, Philippines, Singapore, Malaysia, and India. None of this shows up in your dashboard. That is the problem. SMS OTP failures are quiet. A user who never received their code does not generate an error l...