1. birth: the original form of communication tools
The history of mobile phones can be traced back to the radio communication technology at the end of 19. At that time, people used radio devices to communicate, but these devices were bulky and inconvenient to carry. Until the beginning of the 20th century, radio communication technology gradually improved, and the first portable mobile phone was born. This kind of mobile phone is huge and weighs more than 1 kg, so it can only carry out voice communication.
2. From analog to digital: the innovation of mobile communication technology
In 1980s, analog mobile phones began to enter the market. These mobile phones use analog communication technology, which leads to poor signal quality and unsatisfactory call quality. However, in this period, the mobile phone has already had the short message function, and users can input text information through the keyboard. With the continuous development of mobile communication technology, digital mobile phones came into being. Digital mobile phones use digital communication technologies such as CDMA and GSM, and the signal quality and call quality have been significantly improved.
3. The arrival of the multimedia era: the expansion of mobile phone functions
2 1 century, mobile phones are no longer just communication tools, but gradually evolved into multimedia devices. The mobile phone is equipped with a photo function, so users can take photos anytime and anywhere. With the development of storage technology, mobile phones can also play music and videos. In addition, the mobile phone also has the function of surfing the internet, and users can browse the web and send emails through the mobile phone.
4. The rise of smart phones: mobile phones become smart partners.
In 2007, Apple launched the first generation iPhone, which opened the era of smart phones. Smart phones have powerful processing power and rich applications, and users can do more operations through their phones. Smartphones can not only take photos, play music and videos, but also play games, social media, online shopping and so on. In addition, smart phones also support the installation of third-party applications, and users can choose to install various applications according to their own needs.
5. Future prospect: the development trend of mobile phones
With the continuous progress of science and technology, the development prospect of mobile phones is expected. In the future, mobile phones will continue to develop into smarter partners. The application of artificial intelligence technology will make mobile phones more intelligent and provide more personalized services according to users' needs. In addition, the application of virtual reality and augmented reality technology will also bring more possibilities for mobile phones.