Introduction and Review

WhatsApp Messenger, developed by WhatsApp, is a cross-platform messaging application that allows users to not only send messages to individuals or in group chats, make voice and video calls simply by connecting to wifi, but also to send files, stickers and share real-time locations. As a popular communication app with 2 billion users in more than 180 countries, WhatsApp Messenger connects users around the world, making it easy and fast for people to communicate and connect.

With the primary purpose of promoting simple, reliable and convenient communication, WhatsApp Messenger is a communication app that does a great job of ensuring the privacy of messages and phone calls between users and their friends and relatives. In other words, users don’t need to worry about their chats with close friends being leaked or accessed by others. On the contrary, all content exchanged within the app including stickers, files, audio, video and messages are encrypted end-to-end, giving users absolute security.

In addition to giving users a completely reliable sense of security, the convenience of WhatsApp Messenger is second to none. Why bother trying to remember set after set of passwords and user names? Without the need for redundant account registration or login steps, a phone number and Wi-Fi connection do all the things you can do on WhatsApp Messenger. Because once you sign in to WhatsApp Messenger with your phone number, it will automatically recognize any contacts in your address book who are also using WhatsApp Messenger and be automatically added to your contact list. When you want to exchange messages with others, whether you’re using a phone or a computer, or whether you’re communicating across countries, WhatsApp Messenger supports cross-platform communication over a Wi-Fi connection without charging for it like a regular SMS service.

More importantly, WhatsApp Messenger also allows users to make an encrypted video or voice call with up to eight users simultaneously and send high-quality voice messages as well as share real-time locations within the app, in order to achieve more instant, comprehensive and high-quality contact features. What makes WhatsApp Messenger stand out from other messaging services is that it not only enables users to share photos and videos with the same original resolution quality, but also supports the sharing of all types of files, including documents, slideshows, zip packs and more. In other words, it makes the information exchange between people much richer and more comprehensive.

It is worth mentioning that WhatsApp Messenger is also designed with a Status feature which supports users to show their current statuses, such as online or offline, to all of their contacts in the form of text, photos or even GIFs. If a user sets an offline status, other contacts can see when he was last online.