The mobile phone is connected to WiFi, but it says it needs authentication to access the internet. What happened?

This is the password to enter the background of the router, which means that the router itself cannot access the Internet. Enter the router to see if it is a setup problem, an external network problem or a device problem. But when it comes to authentication, you can surf the Internet, which is a very popular function for businesses now. The authentication process is also very simple, just follow the operation step by step. There are many kinds of authentication (WeChat authentication, SMS authentication, password authentication, etc. ).

Wi-Fi is a technology that allows electronic devices to connect to a wireless local area network (WLAN), usually using 2.4G UHF or 5G SHF ISM radio frequency band. Connecting to WLAN is usually password protected; But it can also be open, allowing any device within the WLAN range to connect.

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 IEEE 802. 1 1 standard. Some people call the local area network using IEEE 802. 1 1 series protocols wireless fidelity. Even equate Wi-Fi with wireless Internet (Wi-Fi is an important part of WLAN).

Regarding the pronunciation of the abbreviation "Wi-Fi", according to the pronunciation notes of the English Standard Webster's Dictionary, the standard pronunciation is/? wa？ . Law? /Because the word WI-FI is composed of two words, it is better to write it in Wi-Fi, so there is no so-called pronunciation problem as experts say. Similarly, there is HI-FI(/ha? . Law? /)。

20 14 August, Ruben Santamarta, a network security researcher, said that if the airplane WiFi was too open, it might be used by hackers for hijacking.

References:

Wi-fi- Baidu encyclopedia