Networks have evolved a lot since the Advanced Research Projects Agency Network (ARPANET). Now there are so many devices with wireless capabilities existing. Long ago, smartphones and tablets were not in existence, and a cellular phone was simply a mobile phone that could fit in a person's pocket and its main function was simply for sending and receiving a call with Short Message Service (SMS) features. Since the launch of Apple's first smartphone back in June 2007, many mobile phone companies such as Motorola, Sony, and Nokia begin manufacturing smartphones and other smart devices such tablets and smart watches.
The need for more efficient methods of communication and the development of various technologies and devices has grown over the past years. In today's world, a person may not have only a mobile device but sometimes a few...
