SAMSUNG GALAXY ALPHA:-
Samsung Galaxy Alpha is an Android smartphone produced by Samsung Electronics. Unveiled on August 13, 2014, the device was released in September 2014. A high-end device, the Galaxy Alpha is Samsung's first smartphone to incorporate a metallic frame, although the remainder of its physical appearance still resembles previous models such as the Galaxy S5. It also incorporates Samsung's new Exynos 5430 system-on-chip, which is the first mobile system-on-chip to use a 20 nanometer manufacturing process.