A family of very popular Android smartphones from Samsung introduced in 2010. In 2011, the Galaxy S was named European Smartphone of the Year and soon became the most popular Android phone on the market. Samsung introduced both the S II and S III in 2012, the latter near phablet size with a 4.8" screen. See smartphone, phablet, Galaxy Note, Google Nexus and Galaxy A series.
Ruggedized "Active" Models
Starting with the Galaxy S4, "Active" models in the Galaxy S series offer a ruggedized option for physically active people. For example, the Galaxy S7 Active is certified IP68 (see IP code).
Galaxy S7 (April 2016)
The latest in the series, the dust- and water-resistant S7 is slightly thicker and heavier than the S6. The external SD Card slot was brought back, and the non-removable battery was bumped from 2,550 to 3,000 mAh (3,600 in the Edge model). The camera has a new sensor and faster auto-focus. The S7 screen is 5.1"; S7 Edge is 5.5" (see Galaxy S7 Edge).
Always Available Time
The S7 features always-on date, time and battery level, which consumes very little power.
Galaxy S6 (April 2015)
The S6 has a slightly thinner, more refined case but the same 5.1" size as the S5. Adding Qi wireless charging to the line, two surprises were the elimination of the replaceable battery and SD Card slot for extra storage (the SD returned on the S7). The S6 added fast battery charging and a minimum of 32GB of storage. The S6 Edge comes with slightly curved screens at both sides. See Galaxy S6 Edge
Galaxy S5 (April 2014)
With a 5.1" screen, the S5 featured many enhancements such as a built-in heart rate sensor and fingerprint reader. The camera took 16-megapixel pictures with advanced modes; for example, the depth of field could be changed after taking the shot. The S5 was waterproof for a short period in one meter of water. For Samsung smartwatch users, the S5 could be a baby monitor that sends signals to the watch. See Samsung Gear
Galaxy S4 (April 2013)
Slightly thinner than the S III, the S4 had a 5" screen and 13-megapixel rear camera. A variety of camera features were added, including automatic album creation and simultaneous front and back recording. The S4 included a higher-capacity battery, an infrared (IR) blaster for home theater remote control and gesture recognition. For example, scrolling and zooming in some apps can be performed by hand motions, and eye tracking will pause a video if the user moves away from the screen.