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Add Firebase Phone Number Verification to your Android app (Codelab) →
Firebase Phone Number Verification documentation →
Get started with Firebase Phone Number Verification on Android→
Are you still relying on SMS OTPs to verify user phone numbers? Nohe explains how to use Firebase Phone Number Verification (PNV) to securely verify user numbers directly through mobile carriers with a single tap. Learn how to prevent SMS pumping fraud, bypass slow carrier delivery times, and build a frictionless Kotlin Android onboarding flow.
More resources:
Verify tokens on your backend →
Phone Number Verification production mode →
Firebase Phone Number Verification observability →
Chapters:
0:00 - Introduction
0:50 - What is Firebase Phone Number Verification (PNV)?
1:44 - Demo set up: Testing
2:33 - Kotlin implementation and Credential Manager
3:15 - Monitoring metrics and observability
#Firebase #AppSecurity
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Speaker: Alexander Nohe
Products Mentioned: Firebase, Firebase Phone Number Verification
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2026/06/25
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