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‎docs/migration-guides/flutter-v3-to-v4.mdx‎

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---
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title: PnP Flutter SDK - v3 to v4
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displayed_sidebar: sdk
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description: "PnP Flutter SDK - v3 to v4 | Documentation - Web3Auth"
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sidebar_label: v3 to v4
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---
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import TabItem from "@theme/TabItem";
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import Tabs from "@theme/Tabs";
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import SMSPasswordless from "@site/src/common/sdk/pnp/flutter/_sms_passwordless.mdx";
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# Migration Guide from v3 to v4 for Web3Auth PnP Flutter SDK
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## Overview
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This migration guide provides steps for upgrading from version 3(v3) to version 4(v4) of the
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Web3Auth PnP Flutter SDK. The guide outlines significant changes and enhancements, including the
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introduction of `enableMFA` method to initiate MFA setup flow, `request` method for transaction
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confirmation screens, `launchWalletServices` method for template wallet interface, updates to the
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`Provider` and the `TypeOfLogin` enum.
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## Changes in Detail
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### `setResultUrl` is now removed
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With the new v4 update, there's a breaking change with the removal of the `setResultUrl` method,
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which was used to trigger the user `UserCancelledException` on Android.
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From v4, developers won't be able to use the `setResultUrl` method.
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### `enableMFA` method
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From v4, developers can now use the `enableMFA` method to initiate MFA setup flow for already logged
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in users.
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<Tabs
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defaultValue="default-verifier"
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values={[
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{ label: "Default Verifier", value: "default-verifier" },
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{ label: "Custom JWT Verifier", value: "custom-jwt-verifier" },
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]}
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>
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<TabItem value="default-verifier">
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```dart title="Usage"
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try {
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// highlight-next-line
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await Web3AuthFlutter.enableMFA();
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} on UserCancelledException {
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log("User cancelled.");
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} catch(e) {
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log("Unknown exception occurred");
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}
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```
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</TabItem>
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<TabItem value="custom-jwt-verifier">
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```dart title="Usage"
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try {
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final loginParams = LoginParams(
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loginProvider: Provider.jwt,
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extraLoginOptions: ExtraLoginOptions(
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id_token: "YOUR_JWT_TOKEN",
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),
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);
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// highlight-next-line
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await Web3AuthFlutter.enableMFA(loginParams);
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} on UserCancelledException { log("User cancelled."); } catch(e) { log("Unknown exceptionoccurred");
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}
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````
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</TabItem>
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</Tabs>
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### `launchWalletServices` method
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From v4, developers can use the `launchWalletServices` to launches a WebView which allows them to use the templated wallet UI
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services. Developers can pass the `ChainConfig` to launch wallet services with a specific chain selected.
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:::note Minimum Scale plan required
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Access to Wallet Services is gated. You can use this feature in the development environment for
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free. The minimum [pricing plan](https://web3auth.io/pricing.html) to use this feature in a
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production environment is the **Scale Plan**.
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:::
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#### ChainConfig Arguments
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| Parameter | Description |
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| ------------------- | --------------------------------------------------------------------------------------------------------------------------- |
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| `chainNamespace` | Custom configuration for your preferred blockchain. As of now only EVM supported. Default value is `ChainNamespace.eip155`. |
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| `decimals?` | Number of decimals for the currency ticker. Default value is 18, and accepts `int` as value. |
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| `blockExplorerUrl?` | Blockchain's explorer URL. (eg: `https://etherscan.io`) |
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| `chainId` | The chain id of the selected blockchain in hex `String`. |
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| `displayName?` | Display Name for the chain. |
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| `logo?` | Logo for the selected `chainNamespace` & `chainId`. |
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| `rpcTarget` | RPC Target URL for the selected `chainNamespace` & `chainId`. |
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| `ticker?` | Default currency ticker of the network (e.g: `ETH`) |
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| `tickerName?` | Name for currency ticker (e.g: `Ethereum`) |
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#### Usage
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```dart title="Usage"
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try {
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// highlight-start
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await Web3AuthFlutter.launchWalletServices(
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ChainConfig(
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chainId: "0x1",
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rpcTarget: "https://mainnet.infura.io/v3/$key",
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),
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);
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// highlight-end
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} on UserCancelledException {
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log("User cancelled.");
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} catch(e) {
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log("Unknown exception occurred");
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}
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````
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### `request` method
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Now, developers can use the `request` method to use the templated transaction confirmation screens
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for signing transactions. To retrive the signature for the request, developers can use the
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`getSignResponse` static method.
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```dart title="Usage"
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try {
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List<dynamic> params = [];
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// Message to be signed
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params.add("Hello, Web3Auth from Flutter!");
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// User's EOA address
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params.add("<User Address in Hex>");
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// highlight-start
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await Web3AuthFlutter.request(
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ChainConfig(
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chainId: "0x1",
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rpcTarget: "https://mainnet.infura.io/v3/$key",
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),
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"personal_sign",
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params,
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);
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// highlight-end
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} on UserCancelledException {
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log("User cancelled.");
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} catch(e) {
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log("Unknown exception occurred");
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}
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// highlight-next-line
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final signResponse = await Web3AuthFlutter.getSignResponse();
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log(signResponse.toString())
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```
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### New Login Providers
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v4 update brings two new providers. Now developers can use the SMS Passwordless and Farcaster login
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options.
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#### SMS Passwordless
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<SMSPasswordless />
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#### Farcaster
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```dart title="Usage"
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final Web3AuthResponse response = await Web3AuthFlutter.login(
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// highlight-next-line
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LoginParams(loginProvider: Provider.farcaster)
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);
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```

‎docs/sdk/pnp/android/custom-authentication.mdx‎

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@@ -8,6 +8,7 @@ description: "Web3Auth PnP Android SDK - Using Custom Authentication | Documenta
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import TabItem from "@theme/TabItem";
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import Tabs from "@theme/Tabs";
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import GrowthPlanNote from "@site/src/common/docs/_growth_plan_note.mdx";
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import SMSPasswordless from "@site/src/common/sdk/pnp/android/_sms_passwordless.mdx";
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To use custom authentication (Using Social providers or Login providers like Auth0, AWS Cognito,
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Firebase etc. or even your own custom JWT login) you can add the configuration to the `loginConfig`
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)
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)
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```
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### SMS Passwordless
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To use the SMS Passwordless login, send the phone number as the `login_hint` parameter of the
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`ExtraLoginOptions`. Please make sure the phone number is in the format of
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+\{country_code}-\{phone_number}, i.e. (+91-09xx901xx1).
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<SMSPasswordless />

‎docs/sdk/pnp/android/mfa.mdx‎

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import TabItem from "@theme/TabItem";
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import Tabs from "@theme/Tabs";
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import MFAMinimumPlan from "@site/src/common/docs/_mfa_minimum_plan.mdx";
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import EnableMFAMethod from "@site/src/common/sdk/pnp/android/_enable-mfa.mdx";
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At Web3Auth, we prioritize your security by offering Multi-Factor Authentication (MFA). MFA is an
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extra layer of protection that verifies your identity when accessing your account. To ensure
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)
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)
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```
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## Using `enableMFA` method to trigger MFA setup flow for users
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<EnableMFAMethod />

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