Today, cell phones also known as smart phones have become an integral part of our lives. They are considered to be one of the best examples of technology, in the last 90 years. It was established in the early 19th century and since then has undergone many changes and modifications. Almost everyday some or the other latest techniques kept on adding to this cellular electronic device. These inventions have made this product one of the most powerful and useful product today.

In the initial days, signals were send and received through many cellular base stations fitted with microwave antennas. However, this method of wireless communication was responsible for adding many new technologies to its system and provided several new services to the users.
Besides, voice function, it also offer the facility of text messaging, e-mails, internet, Bluetooth, infrared, camera and video recording services. All these additions have made our lives much faster, simpler and trendy. The basic difference between GSM (Global System for Mobile Communication) and CDMA (Code Division Multiple Access) is in the way the two share space in the radio spectrum. Although, the former is more popular in Europe and Asia, whereas the latter is commonly used in the United States. However, both work on the same functionality that is to provide high-speed internet access to cell phones.

Cell phone have also become quite important in the educational fields. Students use them both inside and outside the classrooms. It act as an excellent resource-collecting device for them. Besides, it also help students in capturing all-important data, which can be used for documentation in the later stage.
It also plays a major role in the field of investigation. The information on the call records by the cell phone companies help investigators get together important clues and evidences. The technology is also known to assist police in reconstructing the location of the cell phone user instantly. The tracking technology in cell phones help in locating the whereabouts of the suspect.

With the advent of latest technologies in the cellular phone regime, is one of the primary reasons behind its huge popularity. Hence, we can conclude that this small pocket sized device is a magical instrument.