<Tr> <Th> Rear camera </Th> <Td> 5 Megapixels with flash </Td> </Tr> <Tr> <Th> Connectivity </Th> <Td> USB 2.0, Bluetooth 2.1, Wi - Fi b / g, GPS </Td> </Tr> <P> The Samsung Galaxy, known as Samsung GT - I7500 in some countries, is a mobile phone manufactured by Samsung that used the open source Android operating system . It was announced on 27 April 2009 and was released on 29 June 2009 . It is succeeded by the Samsung i5700 . </P> <P> The Galaxy is a smartphone, offering quad - band GSM and announced with tri-band HSDPA (900 / 1700 / 2100) at 7.2 Mbit / s (however, Samsung's official pages for the Danish, Finnish, Norwegian and Swedish versions only mention dual - band UMTS 900 / 2100). The phone features a 3.2 - inch AMOLED capacitive touchscreen, a 5 megapixel autofocus camera with power LED flash, and a digital compass . Unlike the first Android phone, the HTC Dream (the G1), the i7500 has a standard 3.5 mm headphone jack, and a Directional Pad in place of a trackball . </P>

When was the first samsung galaxy phone launched