Firebase SMS Verification

Receive the Firebase SMS verification code with a virtual number and test or clear the phone verification flow on Google's app development platform without using your personal number.

Firebase is an app development and backend platform from Google, providing services such as authentication, databases, and hosting. Firebase's "Phone Authentication" feature sends a one-time verification code by SMS to a user signing into an app with a phone number, which is why in many Firebase-based apps the verification SMS comes from Firebase's infrastructure.

Verification with a virtual number is completed by entering your temporary number on the phone sign-in screen of an app built with Firebase and typing the incoming code. This suits developers testing phone sign-in, the creation of trial accounts with different numbers, or users who want to try an app without giving out their main number.

During verification only the SMS code is shared; your Google or app password should never be given to third parties. With Firebase specifically, the real sender of the SMS is the app using Firebase's infrastructure, so the incoming message may carry that app's name, which is normal.