Phone Number Verification (PNV) over WiFi: How Google and Deutsche Telekom T Wholesale Reimagined Phone Verification

Deutsche Telekom T Wholesale and Google have entered a strategic partnership to jointly deliver second generation Network API–based Phone Number Verification (PNV) that even works over Wi-Fi and in Airplane Mode. This session explores how the combination of Deutsche Telekom’s trusted, mobile network capabilities with Google’s Firebase ecosystem of 4M app developers enables secure, scalable, and frictionless phone number verification across a wide range of digital services.

User onboarding remains one of the most critical and conversion-sensitive moments in digital customer journeys. Traditional SMS one-time passcodes introduce latency, user drop-off, security vulnerabilities such as phishing and SMS pumping, and rising operational costs. Silent Network Authentication (SNA) only works over the cellular data connection, resulting in up to 50% failure rates in real world deployments. Firebase Phone Number Verification fundamentally redefines this experience by enabling one-tap phone number sharing without SMS or manual code entry, allowing verification within seconds and working seamlessly across both cellular and Wi-Fi connections. Phone numbers are securely retrieved directly from the carrier via Network APIs, eliminating common attacks used on SMS.

Network APIs are becoming a key enabler for secure digital identity, fraud prevention, and programmable network capabilities. By participating early in this ecosystem, Deutsche Telekom T Wholesale positions itself as a leading global partner for hyperscalers and developers, unlocking new revenue streams beyond connectivity, strengthening strategic partnerships, and reinforcing its brand as a technology leader. Google, in turn, outlines its vision to expand Firebase PNV globally by onboarding additional Telekom operating companies, delivering coverage superior to SMS-based and SNA verification while offering a more secure, efficient, and user-friendly alternative.