Description
The first handheld mobile phone was demonstrated by John F.Mitchell and Martin Cooper of Motorola in 1973, using a handset weighing c. 4.4 lbs (2 kg). In 1983, the DynaTAC 8000x was the first commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion, penetrating 100% of the global population and reaching the bottom of the economic pyramid .In 2014, the top mobile phone manufacturers were Samsung, Nokia, Apple, and LG.