The Samsung Galaxy S6 is a line of Android-based smartphones manufactured, released and marketed by Samsung Electronics. Succeeding the Samsung Galaxy S5, the S6 was not released as a singular model, but instead in two variations unveiled and marketed together—the Galaxy S6 and Galaxy S6 Edge—with the latter differentiated primarily by having a display that is wrapped along the sides of the device. It is distinguished from its predecessor through a battery with an increased charging speed but a decreased capacity, an optically stabilized camera, sound in slow motion video recordings, a glass back, and it lacks a user-replaceable battery, a memory card slot, water resistance, and MHL-to-HDMI connection for viewing on an external monitor or television set.

The Samsung Galaxy S5 is an Android-based smartphone unveiled, produced, released and marketed by Samsung Electronics as part of the Samsung Galaxy S series. Unveiled on 24 February 2014 at Mobile World Congress in Barcelona, Spain, it was released on 11 April 2014 in 150 countries as the immediate successor to the Galaxy S4. As with the S4, the S5 is an evolution of the prior year's model, placing a particular emphasis on an improved build with a textured rear cover, IP67 certification for dust and water resistance, a more refined user experience, new security features such as a fingerprint reader and private mode, expanded health-related features including a built-in heart rate monitor, a USB 3.0 port, and an updated camera featuring speedy auto-focus through phase-detection. The video resolution has been upgraded to 2160p (4K) and the frame rate at 1080p has been doubled to 60 for a smooth appearance.