Скачать или смотреть Tutorial How to connect android device to wifi hidden ssid.

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1.Scroll through to the bottom of the list and click on “Add Wi-Fi”. In the first line “SSID of the network” you need to specify the name of the network. It should be exactly the same as the name that is indicated in the router configuration.

2.The second step is to choose the data encryption type. In "Security", select the type that is specified in the parameters of the router. Usually it is WPA-PSK\WPA2-PSK, but there are other options. It is important to know exactly what type is set in the parameters of the access point.

3.After you select the data encryption type, another line will appear. You have to enter the key there. Enter it and click "Connect".