voluptasmollitia/docs-exp/auth.userinfo.phonenumber.md

Monorepo for the Firebase JavaScript SDK

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[Home](./index.md) &gt; [@firebase/auth](./auth.md) &gt; [UserInfo](./auth.userinfo.md) &gt; [phoneNumber](./auth.userinfo.phonenumber.md)

## UserInfo.phoneNumber property

The phone number normalized based on the E.164 standard (e.g. +16505550101) for the user.

<b>Signature:</b>

```typescript
readonly phoneNumber: string | null;
```

## Remarks

This is null if the user has no phone credential linked to the account.