Samsung announced the Galaxy S6 at Mobile World Congress in Barcelona on March 1, 2015, as a fresh successor to 2014's Galaxy S5. Aside from the general shape and size, there's not much in common between the two consecutive models. Alongside the S6 came the S6 edge, a variant of the S6 with identical specs, but with a curved screen that wraps around the sides of the device.
The Galaxy S6 has the same sized 5.1-inch screen and button placements, but is made of a solid metal frame with Gorilla Glass 4 on both sides giving it a completely different look and feel. This differs greatly from the previous year's Galaxy S5 which was constructed mostly of plastic. The display is now QHD (2560x1440), and the internals have been bumped up to support it — with an Exynos octa-core processor, 3GB of RAM and 32/64/128GB of storage.
Galaxy S6 Specs
Galaxy S6 Design
With the design change Samsung also decided to drop the seemingly-popular SDcard slot and removable battery (which is a smaller 2550mAh unit), and instead thinned out the phone to just 6.8mm thick and included both Qi and Powermat wireless charging capabilities. The camera in the Galaxy S6 is also an extreme improvement from years past, and arguably one of the best smartphone cameras to date for Samsung. The S6 also supports both major wireless charging standards. A fingerprint scanner built into the home button offers added security for users, and is much improved from the S5. Where the S5 required your to slide your finger to scan, a simple tap does the job on the S6 — and does it extremely well.
The Galaxy S6 also features Android Pay and Samsung Pay, (Samsung's alternative to Android Pay). Both services allow uses to pay with their phone at NFC-enabled terminals, however Samsung Pay also lets users of Samsung devices pay at nearly any credit card terminal -- even if the terminal does not support enabled. It does this using built-in hardware that is able to talk to older terminals using Magnetic Secure Transmission — or MST — in addition to standard NFC transmission.
Galaxy S6 Camera
The camera on the Galaxy S6 is one of its brightest new features, carrying over the same image sensor and optical image stabilization from the Galaxy Note 4. The camera on the S6 features a f/1.9 aperture, HDR, and object tracking autofocus. New features combined with better low-light performance make the camera on the Galaxy S6 one of the best we've seen on an Android phone thus far.
Galaxy S6 Battery
One aspect of the Galaxy S6 that left a bit to be desired was the non-removable 2550MAh battery. Unlike the S5 — which had great battery life for most and featured a swappable battery — the S6 battery life was not on par for most, leaving many complaints about the need to charge frequently since the phone did not make it through the day on a single charge.
Galaxy S6 Rumors
Rumors of the Samsung Galaxy S6 first surfaced sometime around January 2015. It was first reported that Samsung would be ditching the Qualcomm Snapdragon 810 processor in favor of the Exynos system-on-chip (SOC) for the Galaxy S6. It was later reported that the S6 would have an all-metal body, breaking away from the mostly plastic versions of the device in previous years. It was also noted that two variants of the S6 would be made available -- standard design as well as a model with a curved screen. On February 22, 2015, the S6 was officially teased by T-Mobile, showing off a curved device with the line "Six Appeal".
Galaxy S6 Availability
The Galaxy S6 launched globally at the beginning of April 2015 in four different colors — white, black, gold and blue — with support from the major U.S. carriers and retailers, as you'd expect.