I always turn my wifi (via Control Center) when I go to work as it automatically connects to our local network. Some of my apps won't work so I use my LTE connection. However, I noticed a few times that the Wifi gets enabled automagically! I don't know exactly if I'm hitting it by accident (don't know how I can do that) or is there something funky about the settings.
I have an iPhone 6s running 11.0.1
I have an iPhone 6s running 11.0.1