BlackBerry Messenger (BBM) is a proprietary Internet-based instant messenger and videotelephony application included on BlackBerry devices that allows messaging (and videocalls for BlackBerry 10 smartphones) between BlackBerry users. It was developed by the manufacturer of the BlackBerry, BlackBerry Limited (formerly known as Research In Motion Limited (RIM)). Messages sent via BlackBerry Messenger are sent over the Internet and use the BlackBerry PIN system, so communication was only possible between BlackBerry devices until 2013. There are 70 million BBM users worldwide and BlackBerry infrastructure handled 30 petabytes of data traffic each month by early 2013.
The service communicates over the phone's Internet connection using the mobile phone network. A wireless LAN ("Wi-Fi") network connected to the Internet may also be used to send messages, most service providers allow sign-in to BlackBerry Messenger if you have a BlackBerry data plan.
Exchanging messages is possible to a single person or via dedicated discussion or chat groups, which allow multiple BlackBerry devices to communicate in a single session. In addition to offering text-based instant messages, BlackBerry Messenger also allows users to send pictures, voicenotes (audio recordings), files, location on a map and a wide selection of emoticons and the top spec devices can even make videocalls over the WiFi or mobile network.
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