The protocol used by wifi is the ieee802.11b LAN protocol, which uses DSSS (Direct Sequence Spread Spectrum) and QPSK or BPSK (Phase Shift Keyer), the transmission distance is 100 meters, and the maximum speed can reach 11Mbps. The bandwidth is 22MHz. It mainly provides wireless Internet services, so it is often seen in devices that require wireless mobile Internet, such as laptops, pdas, and smart phones. Bluetooth belongs to WPAN wireless domain network, namely point-to-point. And wifi is a WLAN wireless local area network, which is a mode of simultaneous transmission of multiple terminals. In layman’s terms, they are all wireless technologies, and the coverage of WIFI is faster than that of Bluetooth. Bluetooth is a low-speed short-range wireless communication technology with a speed of 3Mpbs and an effective distance of 10m. Wifi technology is a high-speed short-distance wireless communication technology with a speed of up to 300Mpbs and an effective distance of about 100m. Both use internationally recognized free frequency bands for transmission, but Bluetooth is more secure than wifi.
Android is one of the largest sellers of mobile phone equipment in China. It illustrates the importance of the performance of android mobile phones. There are many on the Internet, mainly about the security risks of android, and there are still performance defects. People have tried to use cell phone jammer kits to protect the security of their phones and test them. For mobile phones, there is no absolute security. There are certain loopholes and hidden dangers in any device. Some have been discovered, some are unknown. To be safe, you must take some protective measures. Using mobile phone jammers can block mobile phone signals, reduce the use of mobile phones and other electronic products, and reduce the radiation problems of electronic products. Here you can buy customized mobile phone signal jammers at a lower price to obtain high-quality products and enjoy the most Attentive service.
WiFi is an abbreviation for wireless fidelity. WiFi is actually a small LAN, mainly used for data transmission. As a wireless device, the WiFi transmitter will radiate to the surroundings. WiFi radiation is electromagnetic radiation. The electromagnetic wave frequency bands are generally 2.4 GHz and 5 GHz. The radio frequency electromagnetic wave frequency band is close to the range of mobile phones. The heating effect may affect the health of human tissues. More power will cause harm. The basic view of the scientific community on this kind of radiation in daily life is still: “There is no reliable evidence that weak radio frequency signals may have an impact on human health.”