How to fix Wi-Fi on iPhone 4S with iOS 7?

I can't turn my Wi-Fi on and I've tried resetting network settings and restoring iPhone but I still can't turn it on. It's just greyed out I can't switch it over at all. What can I do to turn it on? Please help. & I can't update to latest iOS that fixes bugs because I can't update without being connected to Wi-Fi.:/ I'm annoyed.

Why does my iPhone 5 battery drain fast?

Ok, so, I charge my iPhone up to 100% battery,

It's on the night, so I don't use it, I just unplug the iPhone after it's charged, and put it on my table, the next day in the morning, it drains to 98% or even less,

I already turned off all the things that drain the battery, IOS 7.3 by the way.

And umm, I turned off the parallex, app refresh, lower brightness, pretty much everything off/disabled, even Siri,

Why does this happen?

Can i spray paint a plastic iPhone?

I have an old plastic iPhone 3g.
I don't use it as an actual cell phone beacause i don't have a data plan. I just use it for music and stuff…

But its whole life, its never had a case, so the rear plastic is pretty much shot…
It used to be black and glossy. But now its an ugly scratched matte gray/glossy black combo.

I want to spray paint it glossy white, but i don't know how to do it right. I tried spray painting my plastic flip phone before, but i didn't sand it or put a clear coat overtop, and it was awful and just peeled and flaked off.

How can i successfully spray paint my iPhone 3g to be glossy white but without having it end up peeling and flaking? How can i avoid getting paint into a small crack in the lower right corner of the plastic? Or the volume buttons?

Need good water proof iphone cases for iphone 5?

I just got a job as a life guard, and i don't want to ruin my iphone5. I need a good Iphone case that's not lifeproof, i have went through 8 of them.anything helps.budget is not a problem exept under 100 dollars.

Will jailbreaking my iPhone 4s ios 7 delete my apps?

I have a lot of apps and games that I'm pretty far into and I wouldn't want to start all over if my apps were to get deleted. So I was wondering if I will still be able to use itunes and redownload all my apps if they were to get deleted and if they'd still have all my info saved.
Next, will jailbreaking my iPhone cause it to crash like I hear some people say it will, while others say they have no issues.