The iPad 4 is the fourth generation and second iPad with the so-called Retina display. It was introduced in October 2012 and in many respects, resembles its predecessor the iPad 3, which had been unveiled in March 2012. The dimensions and battery capacity are equal and the display of 9.7 inches is the exact same size. New to the iPad 4 was the improved A6X processor, a 1.2 MP front camera, Lightning connection and support of multiple LTE frequencies. Starting in February 2013, there is also a version with 128 GB of internal memory.