MadelineProtoDocs/old_docs/API_docs_v25/methods/auth.checkPhone.md

title	description	image	redirect_from
auth.checkPhone	Check if this phone number is registered on telegram	https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png	/API_docs/methods/auth_checkPhone.html

Method: auth.checkPhone

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Check if this phone number is registered on telegram

Parameters:

Name	Type	Description	Required
phone_number	string	The phone number to check	Yes

Return type: auth.CheckedPhone

Can bots use this method: YES

MadelineProto Example (now async for huge speed and parallelism!):

if (!file_exists('madeline.php')) {
    copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';

$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();

$auth.CheckedPhone = $MadelineProto->auth->checkPhone(['phone_number' => 'string', ]);

Or, if you're into Lua:

auth.CheckedPhone = auth.checkPhone({phone_number='string', })

Errors

Code	Type	Description
400	PHONE_NUMBER_BANNED	The provided phone number is banned from telegram
400	PHONE_NUMBER_INVALID	The phone number is invalid
406	PHONE_NUMBER_INVALID	The phone number is invalid
401	AUTH_KEY_PERM_EMPTY	The temporary auth key must be binded to the permanent auth key to use these methods.