Those who have a smartphone or tablet on Android probably encountered such a nuisance as an authentication error. Android - although a popular operating system, is still not without flaws. Not all users understand what it is and how to fix it.
We'll put a word about authentication
Technically speaking, authentication is the process of verifying a security key. It is necessary in order to increase the level of protection of data that is transmitted on the network. And they encounter this procedure when using Wi-Fi.
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If it seemed that it was quite difficult to fix the authentication error, then we dare to assure you that it will take less time than it was necessary to write, and what is there to read this article. But if it does not disappear, try disconnecting and connecting with the password from a desktop computer or laptop. Perhaps the wrong key is just entered. If there is a problem after that, it probably exists at the hardware level.