Cell phone is a portable non-biological entity that has many different functions but mainly for wireless communication. A modern mobile phone is a composition of several components, such as antennas, connectors, shields, speakers, touch window, vibrators and battery, etc. Modern cell phones have many differences compared to cell phones of the old days. The development of mobile phones is rapid and successful. Mobile phones are becoming easier to use and allow users to carry out recreational and entertainment activities such as playing video games, listening to music and radio, taking photos and surfing the net. In 1947, when mobile radio technology and radio frequencies were not that advanced, a person called DH Ring first conceived of cell phone service. However, this idea was not widely adopted because the technology at that time was not that advanced and people simply thought it was not possible. Then after 1965 the technology was improved, customer calls increased, channels were available, but still there was no indication for the appearance of the cell phone. In 1971, a company called AT&T first proposed a mobile phone system to the FCC, which is the Federal Communications Commission. As recently as April 3, 1973, a man called Martin Cooper, who worked as a researcher at Motorola, successfully made a call using the wireless device¹! It turned the history of communication between humans and mobile phones into a new page! In the following year, the FCC began supporting mobile phone companies to work on developing and improving cell phones. In 1977, the FCC in Chicago authorized cell phone testing. The company that obtained the license was the Bell Telephone Company². S...... middle of paper ......usable features and bugs are usually eliminated and fixed. Let's take Galaxy S2 and Galaxy S3 as an example. From the above information, the evolution from Galaxy S2 to Galaxy S3 has brought about some changes in the overall appearance and software of the mobile phone. These changes included some beneficial and undesirable changes. For example, the size and weight of the S3 have been increased, which is not welcome. However, the screen size (diagonal) has increased significantly and the operating system has been improved. These two were good changes. Meanwhile, Galaxy S3 has retained some features in S2 such as 8 Mega pixel autofocus camera. It fits perfectly with the principle of inheritance of traits. S3 inherits the same camera property as S2. In fact other cell phone brands are the same way. like iPhone5 it will also have some features identical to the iPhone4.