A tablet computer from BlackBerry. Introduced in 2011, manufacturing ceased in late 2012. The PlayBook had a 7" screen, rear camera for still and HD video recording and front camera for video calling. Weighing less than a pound, it ran the QNX operating system and included Wi-Fi for the Internet and cellular access via the user's BlackBerry phone plan. Also an Android Tablet The PlayBook also supported Android apps, and third-party Android developers could submit their programs to BlackBerry's online store (see BlackBerry App World). BlackBerry Phone Synchronization Prior to Version 2.0 of the PlayBook OS, e-mail, calendar and contacts on the tablet were available only via Bluetooth and the user's BlackBerry phone. As of Version 2.0, these functions became native within the tablet. As of Version 2.1, the PlayBook could send and receive text messages over Bluetooth and the phone. See BlackBerry and QNX.