Also, why can't I slide the WIFI button on my iPhone?
Try a simple Reset: hold down the Home and Power buttons until you see the Apple logo (10-20 seconds). If this doesn't help, you might need to Restore your iPhone. A greyed out Wi-Fi button often means a defective chip or antenna. Please check this article out.
Furthermore, why won't my iPhone let me connect to WIFI? Reset your Network Settings. Tap Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before.
Similarly one may ask, how do I use the push button on my iPhone for WIFI?
The iPhone does not support WPS to connect to Wifi networks. You need to manually type the password for the Wifi network you wish to connect to on the iPhone. No. The iPhone does not support WPS to connect to Wifi networks.
How do I stop my iPhone from scanning for WIFI?
Change your phone's Wi-Fi settings or turn it off
Just go to Settings> Security & Privacy> Location access > Advanced settings > Wi-Fi scanning. iPhone users can also configure their WiFi settings so that their phones wouldn't broadcast joining requests.