iPhone 6 won't connect to wifi
So I have this iPhone 6 Plus 128GB on ios 11.1.2 that will not connect to any wifi network. When I go to settings>wifi and turn on wifi there are no networks to be found even though all my other products connect just fine. But when I go back to the main settings page it says that the wifi if "off" even though it is on. I have tried rebooting and reseting the network setting but nothing will work. I would upgrade to ios 12 but as i have no wifi connect I don't want to go over my phone data.
iPhone 6 Plus, iOS 11.1.2