WhatsApp is a now free instant – messaging - service, that allows users to send text messages, pictures, videos, voice messages, documents, contacts and locations to other users. There is the possibility to create groups, where users can chat with more than one person. Since 2015 there is also the possibility to call or even video call other users via internet over WhatsApp. The service was founded in 2009 in California as WhatsApp Inc. and offers the app as well as the required servers for the data transfer. WhatsApp was chargeable till the beginning of 2016, now it is free of charge and ad-suportet. 2014 WhatsApp was sold to Facebook Inc.
WhatsApp got it's name from „What's up?“ (Was ist los?) in combination with the word "app". The company was founded in 2009 by Jan Koum and Brian Acton . In the beginning, users were able to create a status which then could be read by a befriended user. Nowadays WhatsApp offers way wider range of products, the app has the reputation to have kicked SMS out of the picture. Till the end of August 2014 WhatsApp has had around 600 million of registrated users. the service is known as the fastest growing internet service in history.
To be able to use WhatsApp, the app has to be downloaded from Google Play Store (Android), App Store (iOS) or Microsoft Store (Windows Phone) and installed. To register, a valid mobile number is needed, this is used as user identification. To complete the registration, a SMS will be sent to the registered number. Alternatively a computer will read the PIN over a phone call. After the completed registration users can chat with each other, this works only if you have the on WhatsApp registered user identification, in this case the registered telephone number of the user. It is not possible to connect to strangers without having their phone number. If you don't want to use your mobile number, you can also use a home number or a second mobile number which is only used for WhatsApp.
The app offers many ways to communicate with others. Pictures can be sent and edited, contacts and specific GPS locations can be shared, audio files can be sent and it is possible to call someone via VoIP (Voice over IP) normally or as a video call. This wont use the mobile network but mobile data or Wi-Fi.. WhatsApp is not usable without internet. The service also offers the use of the browser to connect with others, WhatsApp Web, as the messages are only passed over from the mobile device to the computer, internet on both devices is still needed.
Manuals, helping articles and FAQ´s about WhatsApp.