how to solve authentication problem of wifi

uzairk1122

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Apr 20, 2015
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I have connected Wi-Fi on android phone but it keep getting authentication problem.
And my brother's phone can connect to Wi-Fi....
 
There is a possibility that the phone does not support the 5ghz band. Check the router to see if it's broadcasting in 2.4 and 5 or just 5. What generally happens if it is not supported is the devices will give a "wrong password" or the like. Switching the router to both frequencies will generally fix that.