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Samsung Galaxy S
The first Samsung Galaxy S was announced March 2010 and released to sale in June 2010 -
Samsung Galaxy S II
The Samsung Galaxy II came out in May 2011. On May 9, 2011, Samsung announced that they had received pre-orders for 3 million Galaxy S II units globally. -
Samsung Galaxy S III
The Samsung Galaxy S III came out in May 2012. It was released in 28 European and Middle Eastern on 29 May 2012. -
Samsung Galaxy S4
As you can see, the further along we go the better and bigger the phones are getting. It was first shown publicly March 14, 2013. It was first available in late April 2013 on 327 carriers and 155 countries. -
Samsung Galaxy S6 Edge
The Samsung Galaxy S6 Edge was released the same day as the Samsung Galaxy S6 -
Samsung Galaxy S5 and S5 Active
The actual Samsung Galaxy S5 was released April 11, 2014. This phone, in the picture is the one with only one button on the bottom. The Samsung Galaxy S5 Active was announced and released in May 2014, which was only a month after the regular S5 was released. The only difference in the S5 and the S5 active is the buttons on the bottom and the active may have had a few new features that the S5 didnt have and also the S5 was waterproof