After the mid-19th century, with the telegraph, the telephone's invention, discovery of electromagnetic waves, the field of human cell phone had a huge fundamental change, to achieve the use of metal wires to transmit information, even by electromagnetic waves for wireless phones, so the myth of " ears "" telescope "into a reality. Since then, humans can transmit information from the conventional visual and auditory way millet phone shell recycling electrical signal as a new carrier, so bring a series of technical innovations, began a new era of human phones. In this section, look for original mobile phone housings Obo electronics recycling, we will introduce the 100 years of the most representative of mobile phone technology and mobile way. Many media can be used as a transmission medium in mobile phones, but the media itself has different properties phone casing recovered, suitable for different environmental conditions. At the same time the mobile phone business itself will use a transmission medium for different requirements. Therefore, in the real environment a variety of transmission media exist, the following are three types of common transmission medium. Over Cable: Common wired phones include unshielded twisted pair cable, shielded twisted pair and coaxial cable. Advantages Over Cable is a low cost, easy to install; drawback is the limited frequency spectrum, and inconvenient to move after installation. Cable is wired phone (e.g., access network) The most common transmission medium. On the other hand the high price of original mobile phone housing recovery, using the wireless medium is a significant advantage of building a network fast and mobility, support is good, the drawback is even lower than the spectral width of the cable. In addition, the cost of using the wireless medium is sometimes much higher than the 6 cell phones use a wired medium apple shell recycling, Obo Electronics (certified), Urumqi phone casing recovered by Shenzhen Electronic Technology Co., Obo. Shenzhen Electronic Technology Co., Obo (www.aobodz.com) is Shenzhen, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Obo electronic leadership with the staff warmly welcome all inquiries negotiations to create a better future for electronic Obo.