Ever since its launch in 2009, WhatsApp is an undisputable world leader when it comes to messaging.
One of the most significant advantages is the high level of compatibility of the app.
It works the same regardless of the mobile operating system allowing interconnectivity between users with Android, iOS, Blackberry OSes even Symbian and Java.
In terms of design, the Android version of the app looks more elegant since it was first created for this operating system.
The app is available in almost all countries and has a great push notification system.
The video call feature has decent quality, and so the app is suitable even for business purposes.
However, you need to make sure you have a steady internet connection.
Also, there is no possibility to retrieve or unread a message.
