Remy Perona

You can now include your company’s number in search results.
By using this plugin on your official site, Google will be able to display it in the Knowledge panel for some searches.
For now, there is a defined list of phone numbers that can be included :
<ul>
<li>customer service</li>
<li>technical support</li>
<li>billing support</li>
<li>bill payment</li>
<li>sales</li>
<li>reservations</li>
<li>credit card support</li>
<li>emergency</li>
<li>baggage tracking</li>
<li>roadside assistance</li>
<li>package tracking</li>
</ul>
Additionally, You will be able to set some options for each type of number, like the served areas, languages spoken and more.
For more information, you can read the official page : https://support.google.com/webmasters/answer/4620709?hl=en
Serbo-Croatian translation by http://www.webhostinghub.com/

Google Knowledge Phone Number

Add JSON-LD markup in your WordPress website, to display your company's phone number(s) on Google Knowledge Panels.

Daniel

WP Social SEO Booster adds Facebook Open Graph, Twitter Card and Google Rich Snippets (Microdata / schema.org) to your site to boost your sites search engine visibility. It is the only plugin which does include ALL the different types of microdata which are supported by Google.
Features of this plugin include:
<ul>
<li>Adds all the proper meta tags from existin content. No need to manually setup anything.</li>
<li>Works with any SEO Plugin, such as WordPress SEO by Yoast, All in One SEO and any other SEO plugin.</li>
<li>Google Rich Snippets (Microdata) Integration – Automatically implements the Rich Snippets Tagging for all of your Content.</li>
<li>Google Authorship – Seamlessly integrates Google Authorship for Single and Multi-Author blogs.</li>
<li>Facebook Open Graph – Automatically optimizes your blog for Facebook Open Graph SEO.</li>
<li>Twitter Meta Tags – Automatically adds the Twitter Meta Tags for increased connections between Google, Twitter, and your content.</li>
<li>Google Plus Itemprop Tags . Automatically adds the Google Plus Itemprop tags to your site for better Search Engine Rankings.</li>
<li>Increase SEO Rank – The Plugin does this all seamlessly and can take a poor performing blog to a Highly Ranked Blog FAST!</li>
<li>Supports Rich Snippets (Microdata) for Reviews, Products, Business, People, Recipes, Software, Videos, Events.</li>
<li>Supports Google Plus Publisher Pages.</li>
<li>Supports All Open Graph Content Types such as Article, Book, Profile, Website, Music Album, Song, Movie, TV Show, Video.</li>
<li>Adds the HTML5 Boilerplate optimized .htaccess entries to your .htaccess file.</li>
<li>Does include a star rating system which works with the author rating together.</li>
<li>Every option can be set for general use as well as customized for each post you create.</li>
</ul>
NEW Knowledge Base
We have created a Knowledge Base where you can learn more about the plugin, how to install, configure and use it. 
<a href="http://support.wpsocial.com/" rel="nofollow ugc">WP Social Knowledge Base</a>
We also have a pro version for that plugin with even more features at <a href="http://wpsocial.com/product/wp-social-seo-booster-pro/" rel="nofollow ugc">WP Social Seo Booster Pro</a> and check out, what our customers say about this plugin.
Special Pro features:
<ul>
<li>Works with posts, pages and any custom post types</li>
<li>Support for all Twitter Card types</li>
<li>Includes Social Sharing Buttons</li>
<li>Support for all Open Graph tags</li>
<li>Integrates the Google Itemprop meta tags</li>
<li>Includes Google Plus Interactive Posts Button</li>
<li>Adds Twitter Card Product Type markup to WooCommerce products automatically</li>
<li>Adds Open Graph Product meta tags to WooCommerce Products automatically</li>
<li>Adds the in-depth Article markup to all posts automatically (can also be dactivated)</li>
</ul>
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/k7n2qS1T16o?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
Languages
WP Social SEO Booster as been translated into the following languages:
<ol>
<li>English</li>
<li>German</li>
</ol>
Would you like to help translate the plugin into more languages? <a href="http://wpsocial.com/contact-developer/" rel="nofollow ugc">Contact Daniel</a>.

WP Social SEO Booster – Knowledge Graph Social Signals SEO

Too bad that this free plugin is no longer supported
This plugin doesn't work properly, has too much problems and not compatible with worpdress 4.5



This plugin is outdated and not supported anymore

Turn on Your Blog's Social SEO with WP Social SEO Booster and get a Huge Boost in Google Rankings!

Google Knowledge Phone Number vs WP Social SEO Booster – Knowledge Graph Social Signals SEO