The third-generation iPad (marketed as The new iPad, colloquially referred to as the iPad 3) is a tablet computer, developed and marketed by Apple Inc. The third device in the iPad line of tablets, it added a Retina display, the new Apple A5X chip with a quad-core graphics processor, a 5 megapixel camera, HD 1080p video recording, voice dictation, and support for LTE networks in North America. It shipped with iOS 5.1, which also provides a platform for audio-visual media, including electronic books, periodicals, films, music, computer games, presentations and web content. In the US and Canada, nine variations of the third-generation iPad were offered, compared to six in the rest of the world, although some countries had only the Wi-Fi only model. Each variation was available with black or white front glass panels, with options for 16, 32, or 64 GB of storage. In North America, connectivity options were Wi-Fi only, Wi-Fi + 4G (LTE) on Verizon, AT&T, Telus, Rogers, or Bell. For the rest of the world outside North America, connectivity options are Wi-Fi only (on the Wi-Fi model) or Wi-Fi + 3G (on the Wi-Fi + Cellular model), with the latter unavailable in some countries, as 4G (LTE) connectivity for the device is not available outside North America. The Wi-Fi + Cellular model includes GPS capability. Initially, the cellular version was titled and marketed worldwide as the "Wi-Fi + 4G" model, but due to lack of 4G (LTE) connectivity outside of North America, Apple later rebranded and altered their marketing to call this the "Wi-Fi + Cellular" model. The tablet was released in ten countries on March 16, 2012. It gained mostly positive reviews, earning praise for its Retina display, processor and 4G (LTE) capabilities. However, controversy arose when the LTE incompatibilities became known. Three million units were sold in the first three days. After only 221 days of official availability, the third-generation iPad was discontinued on October 23, 2012, following the announcement of the fourth generation iPad.