2. If the mobile phone is only connected to a certain WiFi, the following methods are recommended for troubleshooting:
(1) There is a software error in the operation of the mobile phone and WiFi router. It is recommended that the mobile phone and WiFi router be turned off and restarted.
(2) Reduce the distance and physical obstacles between the mobile phone and the WiFi router to ensure good coverage quality of WiFi signals;
(3) Check whether the WiFi router has good ventilation and heat dissipation to avoid abnormal operation of the WiFi router caused by overheating;
(4) Check whether there are strong radio interference sources around the WiFi router, which will affect the transmission quality of wireless signals between the mobile phone and the WiFi router;
(5) Test WiFi with a normal mobile phone to see if it will be dropped. If the connection will be dropped, there may be a software or hardware failure in the WiFi router. You can reset the WiFi router to the factory status first. If the fault still cannot be solved, it is recommended to replace the WiFi router.
WI-FI (wireless fidelity) is a technology that can wirelessly connect personal computers, handheld devices and other terminals. It was invented by CSIRO, an Australian government research institute, by john O'Sullivan in 1990s, and was called "the father of Wi-Fi" by the media.
Wi-Fi is a brand of wireless network communication technology, which is owned by the WI-FI Alliance. Its components include basic service unit, distribution system, access point, extended service unit and gateway. The purpose is to improve the interoperability between wireless network products based on IEEE 802. 1 1 standard. There are many kinds of Wi-Fi, including wireless network cards and computers.
WiFi definition Wi-Fi is a technology that can wirelessly connect terminals such as personal computers and handheld devices (such as PADs and mobile phones). Wi-Fi wireless transmission Wi-Fi is a brand of wireless network communication technology, which is owned by the Wi-Fi Alliance. The purpose is to improve the interoperability between wireless network products based on IEEE802. 1 1 standard. The LAN using IEEE 802. 1 1 series protocols is called Wi-Fi. Even equate Wi-Fi with wireless Internet (Wi-Fi is an important part of WLAN).
Wi-Fi doesn't actually have the full English name. Wireless security is really a wrong interpretation, just borrowing Hi-Fi for the convenience of promotion. Wi-Fi refers to the "wireless compatibility certification" in wireless local area network, which is essentially a commercial certification and a wireless networking technology. In the past, computers were connected by network cables, while 20 10 was connected by radio waves. Wireless router is common, so within the effective range of radio wave coverage of this wireless router, Wi-Fi connection can be used for networking. If a wireless router is connected to an ADSL line or other Internet access line, it is also called a hotspot.
Wi-Fi Internet access can be simply understood as wireless Internet access. 20 10 Many smartphones and most tablets support Wi-Fi access. Wi-Fi, the full name of Wi-Fi, is the most widely used wireless network transmission technology. In fact, it is to convert wired network signals into wireless signals, as introduced at the beginning, using wireless routers to receive related computers, mobile phones, tablets and so on that support its technology. If the mobile phone has Wi-Fi function, it can surf the Internet without using the mobile Unicom network when there is Wi-Fi wireless signal, thus saving the traffic fee. But Wi-Fi signals are also provided by wired networks, such as ADSL at home and broadband at home. Wired signals can be converted into Wi-Fi signals as long as a wireless router is connected. Many cities in foreign developed countries have covered Wi-Fi signals provided by the government or large companies for residents to use, but this technology has not been popularized in China in 20 10. In the pilot cities that have not yet issued 4G licenses, many places use 4G to wireless fidelity for citizens to try.
So Wi-Fi access is still very easy to achieve at present. As long as the traditional router at home is replaced by a wireless router, you can enjoy the Wi-Fi wireless network with simple settings. Generally, the receiving radius of Wi-Fi signal is about 95 meters, but it will be affected by walls. And the actual distance will be smaller, but it goes without saying that the office can also be used for the whole building because the distance is not very far.
Wi-Fi is widely used in 20 10 big cities. Although the wireless communication quality transmitted by Wi-Fi technology is not very good, the data security performance is worse than that of Bluetooth, and the transmission quality needs to be improved, but the transmission speed is very fast, reaching 54Mbps, which meets the needs of personal and social informatization. The main advantage of Wi-Fi is that it does not need wiring and is not limited by wiring conditions, which is very suitable for the needs of mobile office users. Moreover, because the transmitted signal power is lower than 100mw, which is lower than the transmitted power of mobile phones, Wi-Fi surfing the Internet is relatively the safest and healthiest.