> ## Documentation Index
> Fetch the complete documentation index at: https://docs-dev-docs-event-stream-action-templates.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.
# MfaPhoneChallenge
> Describes all the properties and methods available to customize the Universal Login `mfa-phone-challenge` screen.
The MfaPhoneChallenge class implements the `mfa-phone-challenge` screen functionality. This screen is displayed when the user needs to receive a code to verify their identity.
## Constructors
Create an instance of MFA Phone Challenge screen manager:
```typescript Example theme={null}
import MfaPhoneChallenge from '@auth0/auth0-acul-js/mfa-phone-challenge';
const mfaPhoneChallenge = new MfaPhoneChallenge();
await mfaPhoneChallenge.continue({ type: 'sms' });
```
## Properties
BrandingMembers}>
Provides branding-related configurations, such as branding theme and settings.
ClientMembers}>
Provides client-related configurations, such as `id`, `name`, and `logoUrl`, for the `mfa-phone-challenge` screen.
OrganizationMembers}>
Provides information about the user's Organization, such as `id` and `name`.
PromptMembers}>
Contains data about the current prompt in the authentication flow.
ScreenMembersOnMfaPhoneChallenge}>
Contains details specific to the `mfa-phone-challenge` screen, including its configuration and context.
TenantMembers}>
Contains data related to the tenant, such as `id` and associated metadata.
TransactionMembers}>
Provides transaction-specific data for the `mfa-phone-challenge` screen, such as active identifiers and flow states.
UntrustedDataMembers}>
Handles untrusted data passed to the SDK, such as user input during MFA phone challenge.
UserMembers}>
Details of the active user, including `username`, `email`, and `roles`.
## Methods
This method changes the display language of the Universal Login page.
```typescript Example theme={null}
import MfaPhoneChallenge from '@auth0/auth0-acul-js/mfa-phone-challenge';
const mfaPhoneChallenge = new MfaPhoneChallenge();
mfaPhoneChallenge.changeLanguage({
language: 'fr',
});
```
**Method Parameters**
[LanguageChangeOptions](/docs/libraries/acul/js-sdk/Screens/interfaces/LanguageChangeOptions).
The locale code for the desired language (for example, `'en'`, `'fr'`, `'es'`).
When set to `'session'`, the selected language persists for the duration of the session.
This method submits the user's choice of receiving the MFA code via SMS or voice call.
```typescript Example theme={null}
import MfaPhoneChallenge from '@auth0/auth0-acul-js/mfa-phone-challenge';
const mfaPhoneChallenge = new MfaPhoneChallenge();
await mfaPhoneChallenge.continue({ type: 'sms' });
```
**Method Parameters**
[MfaPhoneChallengeContinueOptions](/docs/libraries/acul/js-sdk/Screens/interfaces/MfaPhoneChallengeContinueOptions).
The delivery method for the MFA code.
Error[]}>
This method retrieves the array of transaction errors from the context, or an empty array if none exist.
This method initiates the process for the user to select a different phone number.
```typescript Example theme={null}
import MfaPhoneChallenge from '@auth0/auth0-acul-js/mfa-phone-challenge';
const mfaPhoneChallenge = new MfaPhoneChallenge();
await mfaPhoneChallenge.pickPhone();
```
This method allows the user to try another MFA method.
```typescript Example theme={null}
import MfaPhoneChallenge from '@auth0/auth0-acul-js/mfa-phone-challenge';
const mfaPhoneChallenge = new MfaPhoneChallenge();
await mfaPhoneChallenge.tryAnotherMethod();
```