---
title: checkChangePhoneNumberCode
description: Checks authentication code sent to change user's phone number. Returns authStateOk on success
---
## Method: checkChangePhoneNumberCode  
[Back to methods index](index.md)


YOU CANNOT USE THIS METHOD IN MADELINEPROTO


Checks authentication code sent to change user's phone number. Returns authStateOk on success

### Params:

| Name     |    Type       | Required | Description |
|----------|---------------|----------|-------------|
|code|[string](../types/string.md) | Yes|Verification code from SMS, phone call or flash call|


### Return type: [AuthState](../types/AuthState.md)