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Network Authentication API

Replace SMS OTP with SIM-Based Network Authentication API

With T-Mobile’s SIM-based Network Authentication API, verify device-to-number in real time on any connectivity for reliable, phishing-resistant access. Replace OTP with a more secure and seamless experience and experience the future of authentication.

Network Authentication Features

OTP-Free Device Authentication

Eliminates OTPs to reduce phishing risk while delivering a faster, more seamless user experience.

Reliable access on any connection

Works smoothly on mobile networks and Wi-Fi to deliver consistent, user-friendly security everywhere.

Mobile network-level security

Built on native SIM capabilities (cryptography, algorithms, and challenge/response mechanisms) that sit at the core of mobile network operations, delivering security by design.

How SIM-based Network Authentication works

This short demo walks through the end-to-end network authentication flow, showing how you can maintain control over your app’s UI and UX while strengthening security and reducing user friction.

Start building a next-generation authentication experience for your business.

Android Authentication Flow

Up Next:

Android Authentication Flow

Android Authentication Flow


Network Authentication Use Cases

Fraud Prevention

Reduce fraud and unauthorized access by adding network-level verification when risk is detected, without introducing friction or disrupting the customer experience.

User Onboarding

Improve trust at account creation by verifying accessible phone numbers through the mobile network, lowering exposure to SIM swap and social engineering attacks while simplifying the onboarding experience.

Account Security

Strengthen account security with seamless network-based verification at login. Minimize account takeovers, reduce fraudulent and duplicate accounts, and prevent customer drop-off caused by OTP fatigue.


How to get started

Submit your interest through the program access lead form.
A member of our Business Development team will review your information and reach out to discuss your goals and next steps.
If there's mutual interest in moving forward, you'll receive an NDA to formalize the engagement.
Once the NDA is signed, you will be granted access to the relevant materials or prompts to proceed.

Get started with DevEdge
Contact us for specific questions, pricing information or for support in getting started.