WhatsApp

<b>WhatsApp Messenger</b> is a <a title="Freeware" href="https://en.wikipedia.org/wiki/Freeware">freeware</a> and <a title="Cross-platform" href="https://en.wikipedia.org/wiki/Cross-platform">cross-platform</a> <a title="Instant messaging" href="https://en.wikipedia.org/wiki/Instant_messaging">instant messaging</a> service for <a title="Smartphone" href="https://en.wikipedia.org/wiki/Smartphone">smartphones</a>. <sup id="cite_ref-metz-wired_45-0" class="reference"></sup>It uses the <a title="Internet" href="https://en.wikipedia.org/wiki/Internet">Internet</a> to make voice calls, one to one video calls; send <a class="mw-redirect" title="Text message" href="https://en.wikipedia.org/wiki/Text_message">text messages</a>, images, <a title="GIF" href="https://en.wikipedia.org/wiki/GIF">GIF</a>, videos, documents, user location, audio files, phone contacts and voice notes <sup id="cite_ref-46" class="reference"></sup>using standard <a title="Cellular network" href="https://en.wikipedia.org/wiki/Cellular_network">cellular</a> <a title="Telephone number" href="https://en.wikipedia.org/wiki/Telephone_number">mobile numbers</a>. Originally users could only communicate with other users individually or in groups of individual users, but in September 2017 WhatsApp announced a forthcoming business platform which will enable companies to provide customer service to users at scale.<sup id="cite_ref-whatsapp.com_43-1" class="reference"></sup> All data are <a title="End-to-end encryption" href="https://en.wikipedia.org/wiki/End-to-end_encryption">end-to-end encrypted</a>. It also incorporates a feature called Status, which allows users to upload photos and videos to a 24-hours-lifetime feed that, by default, are visible to all contacts, similar to <a title="Snapchat" href="https://en.wikipedia.org/wiki/Snapchat">Snapchat</a>, <a title="Facebook" href="https://en.wikipedia.org/wiki/Facebook">Facebook</a> and <a title="Instagram" href="https://en.wikipedia.org/wiki/Instagram">Instagram</a> Stories.