Data usage on iPhone 4s AT&T?

I'm on Wi-Fi everywhere I go. College, at home, friends house etc. It shows Wi-Fi bars. And my mom is telling me I've already used over 85% of my monthly data. My question is how is that possible if I'm on Wi-Fi everywhere? What is considered "data usage"? To my knowledge I thought it was getting on the Internet/game apps when NOT on Wi-Fi? Can someone please explain this to me?

Factory unlocking an iphone?

Could I get a iPhone (At&t) from the apple store online, and then factory unlock it through someone on eBay? I see the service all the time. A already factory unlocked black one is only like 200 on eBay, but I really want the white one which seem to be more expensive.

How long does it take to complete tiny tower?

I have a iPhone and iPad, and I have the app tiny tower.So, I only have 12 floors and I've had
Tiny tower for about a month now. So what I want to know is, how long does it take to get all the
Floors like complete Tiny tower? I know there's 132 floors. Have any of you had experience and have took a year to complete it? No rude comments please.

Is 16 GB enough on my IPhone?

Lets say I download 900 songs, 3 videos, 3 movies (not HD), 150 pictures, and I have 20-25 apps (not including the pre-downloaded ones).Is a 16 GB IPhone enough space? If it is, how much extra space would I have?

How to make my iPhone 3GS act like an iPod touch?

I have an iPhone 3GS that doesn't have a SIM card activated in it because the activation system doesn't work anymore. I hacktivated it and it works now but it doesn't connect to iTunes and I can't use iMessage. Is there another way I can fix this?

IPhone 4S earpiece speaker extremely quiet?

Since updating to iOS 6 the in call volume of the earpiece has been so low I can't even hear the person on the other line. Has anyone else had this problem or know what the fix could be? The hasn't been any water damage and I don't use a screen protector. Any help is great help, thanks