my wifi button is not highlighhted on my iphone 6 how do i get it to work

iOS: Wi-Fi settings grayed out or dim

Did you read the support article I linked for you??

shepretty wrote:

how do i get it to work

If Wi-Fi is grayed out or dim on your iPhone, iPad, or iPod touch

If you can't turn on Wi-Fi on your device because the setting is grayed out or dim, follow these steps.

Check if the issue still exists after each step:

1. Make sure you have the latest version of iOS.
2. Tap Settings General > Reset > Reset Network Settings. This will reset all network settings, including Bluetooth pairing records, Wi-Fi passwords, VPN, and APN settings.

If you still need help, contact Apple for support and service options.