<P> The devices have also been released internationally . On 21 April 2017, they were made available in South Korea, Canada, and Taiwan . On 28 April, they were made available in the United Kingdom, Australia, Ireland, and Russia . followed by Singapore one day later . On 5 May, they were made available in Malaysia . New Zealand, India, the Philippines, and Thailand . followed by Brazil on 12 May . On 25 May, they were made available in China, and Hong Kong . On 8 June, they were made available in Japan . </P> <P> In July 2017, pictures of the Galaxy S8 Active were leaked on Reddit, and the following month, AT&T "accidentally" confirmed its existence through a document in a promotional campaign . It officially became available for pre-order, exclusively through AT&T, on 8 August 2017, with in - store purchase available 11 August . VentureBeat reported in late September that the device would also become available through T - Mobile in November, and Samsung subsequently confirmed both T - Mobile and Sprint availability in early November . </P> <P> The Galaxy S8 and S8+ both feature 1440p OLED displays, with an 18.5: 9 (37: 18) aspect ratio taller than the 16: 9 ratio used by the majority of smartphones; the S8 has a 5.8 - inch panel, while the S8+ uses a larger 6.2 - inch panel . The displays on both devices curve along the side bezels of the device, with minimal bezels that Samsung markets as an "Infinity Display", and the display panel itself has rounded edges . They use DCI - P3, offering what screen - testing website DisplayMate describes as the largest native color gamut, highest peak brightness, highest contrast rating in ambient light, highest screen resolution, lowest reflectance, and highest contrast ratio . The S8 features an octa - core Exynos 8895 system - on - chip and 4 GB of RAM; models in North American and East Asian markets utilize the Qualcomm Snapdragon 835 instead . Both chips are manufactured by Samsung with a 10 nm process . They contain 64 GB of internal storage, expandable via microSD card . The Galaxy S8 is one of the first smartphones to support Bluetooth 5, supporting new capabilities such as connecting two wireless headphones to the device at once . It is also bundled with Harman AKG earbuds . Both smartphones have improved satellite navigation over the predecessors by including Galileo receivers . In the United States, the S8 and S8+ are available in Midnight Black, Orchid Gray, and Arctic Silver color options, whereas gold and blue are available internationally . The blue option was made available in the U.S. in July 2017 . </P> <P> Unlike past Galaxy S series models, the S8 line does not feature physical navigation keys, electing to use on - screen keys instead . However, unlike other implementations, the home button can still be activated if it is hidden or the screen is off . The S8's display features pressure sensitivity limited to the home button . To prevent the home button from burn - in damage, its position moves slightly . While The Verge claims that the S8 uses exactly the same 12 - megapixel rear camera as the S7, though with software improvements, a report from PhoneArena claims that the phones carry new, custom camera modules . The front - facing camera was upgraded to an 8 - megapixel sensor with autofocus . The S8 features fingerprint and iris scanners; the fingerprint reader is relocated to the rear of the device, to the left of the camera, due to the removal of the physical home button . In addition to an iris scanner, the S8 also features face - scanning as an option to unlock the phone . Face recognition technology had previously been implemented in earlier models since the Galaxy S III . </P>

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