My iPhone wont let me use wifi?

My iPhone wont give me the option to turn on wifi whenever I go under settings to wifi it is grey and when I try to click to turn wifi on it won't let me.
I tried resetting network settings and it didn't do anything
What do you do? My iPhone is up to date on everything

Well in the future don't buy apple products because they suck, I honestly dont know

This is kind of a shot in the dark, but attempt to turn of data and all other methods of reception to your phone. Basically put it on airplane mode. Then go into the settings menu and try to access wifi that way. Good luck!

It still wont let me wifi still gray