Campo CELULAR/TELEFONE não aparece no My Account

Bom, estudei vários códigos e cheguei em um. Vou deixar o código abaixo para ajudar outras pessoas:

// Libera editar telefone e celular
add_action( 'woocommerce_edit_account_form', 'add_billing_phone_to_edit_account_form' );
function add_billing_phone_to_edit_account_form() {
    $user = wp_get_current_user();
    ?>
     <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
        <label for="billing_phone"><?php _e( 'Celular', 'woocommerce' ); ?> <span class="required">*</span></label>
        <input type="text" class="woocommerce-Input woocommerce-Input--phone input-text" name="billing_phone" id="billing_phone" value="<?php echo esc_attr( $user->billing_phone ); ?>" />
    </p>
    <?php
}

add_action( 'woocommerce_save_account_details_errors','billing_phone_field_validation', 20, 1 );
function billing_phone_field_validation( $args ){
    if ( isset($_POST['billing__phone']) && empty($_POST['billing_phone']) )
        $args->add( 'error', __( 'Digite seu telefone/celular', 'woocommerce' ),'');
}

add_action( 'woocommerce_save_account_details', 'my_account_saving_billing_phone', 20, 1 );
function my_account_saving_billing_phone( $user_id ) {
    if( isset($_POST['billing_phone']) && ! empty($_POST['billing_phone']) )
        update_user_meta( $user_id, 'billing_phone', sanitize_text_field($_POST['billing_phone']) );
}

Vale lembrar que: billing_phone é para Telefone, billing_mobile_phone é para Celular (caso precise usar telefone/celular no cadastro).