Auth Comp: 2FA code input

[CherryCIC]

Users will need to input the numerical code sent to their phone number to verify their authentication.

[fion21]

I have looked in to this and tried and tested some of that. I have not uploaded as it was too different to the main app.
Take aways : Go into Firebase app, found that you need to pay for SMS MFA and also for google , apple SSO. That is a decision for the App owner to consider.

Firebase Authentication with Identity Platform

Firebase Authentication with Identity Platform is an optional upgrade that adds several new features to Firebase Authentication.

This upgrade does not require any migration—your existing client SDK and admin SDK code will continue to work as before, and you'll gain immediate access to features such as enhanced logging and enterprise-grade support and SLAs. With some additional code, you'll be able to add multi-factor auth, blocking functions, and support for SAML and OpenID Connect providers.

Firebase Authentication with Identity Platform has a different pricing scheme compared to the base product. When upgraded, no-cost (Spark) plan projects will be limited to 3,000 daily active users, and pay-as-you-go (Blaze) plan projects will be charged for usage beyond the free tier of 50,000 monthly active users. Be sure you understand the billing implications before you upgrade.

Read more about the new features, pricing, and limits below.

Features

Multi-factor authentication | Multi-factor authentication with SMS protects your users' data by adding a second layer of security to your app.Learn how to add MFA to your Apple, Android, and web apps. -- | -- Blocking functions | Blocking functions let you run custom code that modifies the result of a user registering or signing in to your app.Learn how to extend Firebase Authentication with blocking functions. SAML and OpenID Connect providers | Support sign-in using SAML (web only) and OpenID Connect providers not natively supported by Firebase.Learn how to add SAML sign-in to web apps and OpenID Connect sign-in to Apple, Android, and web apps.

Firebase Authentication with Identity Platform Firebase Authentication with Identity Platform is an optional upgrade that adds several new features to Firebase Authentication.

This upgrade does not require any migration—your existing client SDK and admin SDK code will continue to work as before, and you'll gain immediate access to features such as enhanced logging and enterprise-grade support and SLAs. With some additional code, you'll be able to add multi-factor auth, blocking functions, and support for SAML and OpenID Connect providers.

Firebase Authentication with Identity Platform has a different pricing scheme compared to the base product. When upgraded, no-cost (Spark) plan projects will be limited to 3,000 daily active users, and pay-as-you-go (Blaze) plan projects will be charged for usage beyond the free tier of 50,000 monthly active users. Be sure you understand the billing implications before you upgrade.

Read more about the new features, pricing, and limits below.

Features
Multi-factor authentication
Multi-factor authentication with SMS protects your users' data by adding a second layer of security to your app.

Learn how to add MFA to your Apple, Android, and web apps.

Blocking functions
Blocking functions let you run custom code that modifies the result of a user registering or signing in to your app.

Learn how to extend Firebase Authentication with blocking functions.

SAML and OpenID Connect providers
Support sign-in using SAML (web only) and OpenID Connect providers not natively supported by Firebase.

Learn how to add SAML sign-in to web apps and OpenID Connect sign-in to Apple, Android, and web apps.

[CherryCIC]

Thank you for looking into this @fion21. I've read the above, but does this paywall also apply for email authentication? It seems to only be concerned with SMS. This could be potentially a quick fix if so.

Copying: @yusuphjoluwasen @chh0871 @MattGoodwin0 @UllashPodder @olayemiabdul @umerabidin @chyesith @sangeethadevi-cuddaphadesaiah @abhilal03 @areej-f for visibility

[CherryCIC]

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✅ 

Email/Password Authentication (Standard Firebase)

💸 Cost: Free

Firebase’s base product (on the Spark or Blaze plan) includes email/password authentication at no cost.

You do not need to upgrade to Firebase Authentication with Identity Platform just to use email login.

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❗ What Costs Money:

1. 📱 SMS Multi-Factor Authentication (MFA)

   • This is not free on either plan.

   • You are charged per SMS.

2. 🔑 Google, Apple, Facebook, and other SSO providers

   • These are free with the base Firebase Authentication.

   • If you want enterprise features (like SAML, OIDC, blocking functions, or logging enhancements), you must upgrade to Firebase Authentication with Identity Platform, which has usage limits and billing implications.

3. 🚨 Identity Platform Upgrade (optional)

   • This is not required unless you need:

     • More than 3,000 daily active users (on Spark)

     • Enterprise-grade features

     • MFA, SAML, or advanced IAM policies

   • If you upgrade:

     • You’ll get 50,000 free MAUs per month

     • After that, you’ll be billed per user/month

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💡 Summary

Auth Method	Free (Base Firebase)?	Requires Identity Platform?	Notes
Email/Password	✅ Yes	❌ No	Fully free
Google / Apple / Facebook	✅ Yes	❌ No	Free up to usage limits
SMS (Multi-factor Auth)	❌ No	✅ Yes	Charged per SMS
SAML / OIDC (Enterprise)	❌ No	✅ Yes	Advanced use only

This is what AI has said, still very much interested to hear your thoughts!!!