Reference
Your tablet cannot connect to a Wi-Fi network.
- Make sure the Wi-Fi function is turned on.
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Tap [ Apps & Widgets] - [ Settings] - [Wi-Fi] in that order, and then set [Wi-Fi] to [ON].
- Make sure there is not anything blocking the signal between devices and that the devices are not too far away from each other [Details].
- Check the Wi-Fi connection by using the [Wi-Fi checker] app [Details].
- You may be able to make a connection by changing the channel settings of your access point.
- Make sure the [Network SSID] and the [Security] of your access point are set correctly.