A video published after the phones' release proved that the devices' facial and iris scanners can be fooled by suitable photographs of the user. They received criticism for duplicate software apps, lackluster Bixby features at launch, and for the placement of the fingerprint sensor on the rear next to the camera. Their design and form factor received praise, while critics also liked the updated software and camera optimizations. The S8 and S8+ received positive reviews. 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 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 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 Micro-USB 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 was announced on 8 August 2017 and is exclusive to certain U.S. The S8 and S8+ were unveiled on 29 March 2017 and directly succeeded the Samsung Galaxy S7 and S7 edge, with a North American release on 21 April 2017 and international rollout throughout April and May. The Samsung Galaxy S8 and Samsung Galaxy S8+ are Android smartphones produced by Samsung Electronics as the eighth generation of the Samsung Galaxy S series. USB type-C, Bluetooth 5.0 (LE up to 2Mbps), 802.11 a/b/g/n/ac (2.4/5GHz) WiFi, NFC, location ( GPS, Galileo, GLONASS, BeiDou) speaker(s), audio jack, vibration motor, etc.

2960×1440 1440p Super AMOLED capacitive touchscreen display, HDR10.

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