Won't connect to wifi

First you need to check your Wi-Fi Router: check if other devices can be connected. This will let you know whether there is a problem with your Wi-Fi router. You can restart your router and try to connect to WiFi again.

Make Sure Wi-Fi on And You can See Your Network

Go to Settings on your iPhone > Wi-Fi, and check if it is on. And if there is a blue checkmark beside a network name means your iPhone or iPad has been connected to this network.

Restart Your iPhone/iPad, Router, Cable/DSL mode

If that doesn't help, reset Your Network

On your iPhone iPad, got to Settings > General > Reset > Reset Network Settings. This will reset Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you have used before.

These steps should help.

I am having wi-fi issues after updating to iOs 10.0.2.

Specifically it will not connect to hidden SSID's even with the correct connection information. In order to connect to my home wi-fi I have set my router to publish my SSID. This has never been an issue in the past (8+ years), and only became an issue with this update.

I updated my iphone6 and my wife and Bluetooth are disabled