Samsung made invention and brings new technologies specially in mobile phones its model samsung galaxy s5 is great device its featuresnare awesome its touch screen is so smooth that no other brand can compete its display is prvided with super amoled capictive touch screen it has fast 2.5 ghz quard core processor with 2 gb ram and 16/32 gb rom its 16 mp camera provide a user a high quality image it has 4k video recording technology you can also record slow motion videos it has 2800 mah battery and finger print scanner one of it outstanding feature is it has heart beat monitor sensor you can easily measure your heart rate using samsung galaxy s5.it has very good built in quality.