Samsung Galaxy S8

The Samsung Galaxy S8, Samsung Galaxy S8+ (shortened to S8 and S8+, respectively) and Samsung Galaxy S8 Active are Android phablet smartphones (with the S8+ being the phablet

smartphone) produced by Samsung Electronics as their eighth generation of the Samsung Galaxy S series. The S8 and S8+ were unveiled on 29 March 2017 and directly succeed the Samsung Galaxy S7 and S7 edge, with a North American release on 21 April 2017 and international rollout throughout April and May. The S8 Active was announced on 8 August 2017 and is exclusive to certain U.S. cellular carriers.

The S8 and S8+ contain upgraded hardware and major design changes over the S7 line, including larger screens with a taller aspect ratio and curved sides on both the smaller and larger models, iris and face recognition, a new suite of virtual assistant features known as Bixby (along with a new dedicated physical button for launching the assistant), a shift from MicroUSB to USB-C charging, and Samsung DeX, a docking station accessory that allows the phones to be used with a desktop interface with keyboard and mouse input support. The S8 Active features tougher materials designed for protection against shock, shatter, water and dust, with a metal frame and a tough texture for improved grip that makes the S8 Active have a rugged design. The Active's screen measures the same size as the standard S8 model but loses the curved edges in favor of a metal frame.

The S8 and S8+ received mostly positive reviews. Their design and form factor received praise, while critics also liked the updated software and camera optimizations. They received criticism for duplicate software apps, lackluster Bixby features at launch, for the placement of the fingerprint sensor on the rear next to the camera. A video published after the phones' release proved that the devices' facial and iris scanners can be fooled by suitable photographs of the user.

The S8 and S8+ were in high demand at release. During the pre-order period, a record one million units were booked in South Korea, and overall sales numbers were 30% higher than the Galaxy S7. However, subsequent reports in May announced sales of over five million units, a notably lower first-month sales number than previous Galaxy S series models.

On March 11, 2018, Samsung unveiled the successor to the S8 flagship, the Samsung Galaxy S9

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