2. Mobile Phones
The invention of the telephone is thought to be yet another great achievement by humans. Invented by Alexander Graham Bell, the first telephone was invented during the 1870s. Since then the technology has seen much evolvement and today is the age of the mobile phones. The land lines have given way to the mobile phones that are phones that provide the opportunity to communicate while on the go. Since the introduction of the first mobile phone, the phones have become much smaller, more sophisticated and more affordable.