Apple sold 74.83m smartphones worldwide, ahead of the 73.03m phones sold by Samsung, according to a report by research firm Gartner. The success of the big-screen iPhone 6 and 6 Plus drove Apple's sales in its first quarter ended December 27.Mar 3, 2015
The outer casing of the cell phone could be made of several types of material, such as plastic, metal or glass. The assembly process of the smartphone begins with key components such as printed circuit board (PCB), battery, screen and casing.
Motorola was the first company to produce a handheld mobile phone. On April 3, 1973, Martin Cooper, a Motorola researcher and executive, made the first mobile telephone call from handheld subscriber equipment, placing a call to Dr. Joel S. Engel of Bell Labs, his rival.