1. There may be many reasons why Xiaomi mobile phone can't connect to wifi. We need to check first and find out the reason why wifi can't connect to solve the problem. We can change the network environment first to see if our mobile phone can't connect to wifi anywhere.
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2, if our mobile phone only can not connect to this wifi, it is likely that there is a problem with the wifi Settings of our mobile phone, we can forget the network, and then re-find the network to enter the password to re-log in!
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3, if we forget to re-log in to the network or can not connect to the wifi, then there may be a problem with our router, then we need to check our router, we try to restart the router to see if it is useful.