WordPress at a glance
filter is not described

phone_content filter-hook . WP 1.2.0

Filters the content of the post submitted by email before saving.

Usage

add_filter( 'phone_content', 'filter_function_name_8694' );
function filter_function_name_8694( $content ){
	// filter...

	return $content;
}
$content(string)
The email content.

Where the hook is called

In file: /wp-mail.php
phone_content
wp-mail.php 204
$post_content = apply_filters( 'phone_content', $content );

Where the hook is used (in WP core)

Does not used.