Fixed: This request is missing a valid app identifier

Prerequisite : “Identify and add SHA1 / SHA-256 Certificates to Firebase console for Phone Authentication”

When we were trying for Firebased based SMS OTP Authentication for our android app, we followed all the steps but got the exception as below, This request is missing a valid app identifier, meaning that neither SafetyNet checks nor reCAPTCHA checks succeeded. Please try again, or check the logcat for more details

Solution :

Subscribe with Valid Email Id to receive updates in Inbox. ( Secured by Google FeedBurner )


This can be solved by modifying app/build.gradle to add a line as,

implementation 'androidx.browser:browser:1.0.0'


Leave a Comment

Android Android Build system Android Commands Android Java Applications Application Libraries Application Stack / User Interface Bash / Shell Scripts Bluetooth driver Cloud Technologies Commands and Packages Compilation Content Management System Core Kernel C Programs Development & Build Development, Debugging and Performance Tools Development Environment Setup Django & REST Api Errors & Failures Git Hardware Platforms HTML JAVA Programs Linux, OS Concepts and Networking Linux Device Drivers Linux Host, Ubuntu, SysAdmin Linux Kernel Linux Networking Middleware Libraries, HAL Multimedia Audio, Video, Images NDK / Middleware / HAL OS Concepts PHP Programming Languages Scripting and Automation Search Engine Optimisation ( SEO ) Social Media Source Code Management ( SCM ) System Administration, Security Testing and Debugging Uncategorized Web design and development Website Hosting Wordpress Yocto / Bitbake / Openembedded