BlackBerry
BlackBerry was a brand of smartphones and other related mobile services and devices. The line was originally developed and maintained by the Canadian company BlackBerry Limited (formerly known as Research In Motion, or RIM) from 1999 to 2016, after which it was licensed to various companies. Specializing in secure communications and mobile productivity, BlackBerry was once well known for the keyboards on most of its devices and software services that ran through its own servers. At its peak in September 2011, there were 85 million BlackBerry subscribers worldwide. However, BlackBerry lost its dominant position in the market due to the success of the Android and iOS platforms; its numbers had fallen to 23 million in March 2016, a decline of almost three-quarters. On September 28, 2016, BlackBerry Limited announced it would cease designing its own BlackBerry devices in favour of licensing to partners to design, manufacture, and market. The original licensors were BB Merah Putih for the Indonesian market, Optiemus Infracom for the South Asian market, and BlackBerry Mobile (a trade name of TCL Technology) for all other markets. Historically, BlackBerry devices used a proprietary operating system—known as BlackBerry OS—developed by BlackBerry Limited. In 2013, BlackBerry introduced BlackBerry 10, a