The Samsung Galaxy S6, Galaxy S6 or just GS6 is an Android-based smartphone developed, manufactured, released and marketed by Samsung Electronics. It is the successor to the Samsung Galaxy S5 and the predecessor to the Samsung Galaxy S7. It was unveiled on March 1, 2015 with the Samsung Galaxy S6 Edge and released on April 5, 2015. On August 21, 2015, the Samsung Galaxy S6 Edge+ was released.