The iPhone 3GS, stylized as iPhone 3G🅂, is a smartphone that was developed and marketed by Apple. It is the third generation of the iPhone and the successor to the iPhone 3G. It was unveiled on June 8, 2009, at the WWDC 2009, which took place at the Moscone Center in San Francisco.
According to Phil Schiller, a key figure at Apple, the “S” in “3GS” stands for “Speed.” Improvements included performance, a 3-megapixel camera with higher resolution and video ability, voice control, and support for 7.2 Mbit/s HSDPA downloads. It was released in the United States, Canada, and six European countries on June 19, 2009, in Australia and Japan on June 26, and elsewhere internationally in July and August 2009.
The iPhone 3GS runs iOS, Apple's mobile operating system. It was succeeded as Apple's flagship smartphone by the iPhone 4 on June 24, 2010. At the same time, the 8 GB model of the iPhone 3GS was released, discontinuing the 16 and 32 GB models. The 8 GB 3GS continued in production until September 2012, when it was discontinued with the announcement and release of the iPhone 5.